CN109299076A - Method, device and equipment for generating primary key of data acquisition point in redundant database - Google Patents
Method, device and equipment for generating primary key of data acquisition point in redundant database Download PDFInfo
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Abstract
The invention discloses a method for generating a primary key of a data acquisition point in a redundant database, which comprises the following steps: when a data acquisition point recording request is received, acquiring a point main key maximum value corresponding to the selected main key generation mode; adding a preset value to the maximum value of the point primary key to obtain a target point primary key value corresponding to the target data acquisition point; and recording the target data acquisition points into the primary library and the preset standby library by taking the target point primary key value as a mark. By applying the technical scheme provided by the embodiment of the invention, the point primary key values of all data acquisition points recorded in the same database are ensured to be different, and the primary key consistency of the same data acquisition point in the primary and standby databases can be effectively ensured by synchronizing the same target data acquisition point and the target point primary key value thereof from the primary database to the standby database, thereby eliminating the potential safety hazard in the management of the power system. The invention also discloses a device, equipment and a storage medium for generating the primary key of the data acquisition point in the redundant database, and has corresponding technical effects.
Description
Technical field
The present invention relates to electric power project engineering fields, more particularly to a kind of major key of data collection point in redundant database
Generation method, device, equipment and computer readable storage medium.
Background technique
The design of relevant database has to comply with second normal form, i.e., each record in table all must be with the master of the table
Key is completely dependent on relationship namely each record and can uniquely be distinguished by major key.It is acquired with data and monitors control
For system SCADA processed, towards monitored object be electromechanical equipment, every equipment needs a unique device id to mark
Note, an equipment include one or more data collection points, both may be the digital quantity point for indicating switch division, it is also possible to table
Show speed, temperature, electric current analog quantity point, each data collection point needs a unique point Major key to mark.
If only consider only have a database server system, can there are many kinds of database key generate
Strategy is available, generates major key most commonly by from the mode for increasing major key, passes through the increment of database itself
Increment attribute or sequence sequence object automatically generate major key, can also carry out max+1 operation by broker program
Generate major key.Record in and energy unique identification data library unrelated with business.External system batch can be well solved to import
The problem of major key is generated when data.
In practical applications, in order to improve the reliability of application system, two or more database servers can be passed through
Redundancy Design provides service jointly.The usual thinking of Redundancy Design is M+N, i.e., one shared M+N node, M node provides normal
Rule service, N number of node is as spare.Consider database redundancy in the case where, primary key generation strategies in addition to search efficiency,
Except ease of use etc. requires, emphasis is also wanted to consider how to guarantee that the major key of identical data collection point in active and standby library is consistent
Property, it avoids conflicting, otherwise will cause security risk to the management of electric system.
In conclusion how to efficiently solve the major key of identical data collection point in active and standby library there are inconsistent, lead
Key conflict, so that the management of electric system has security risk, being that current those skilled in the art are urgently to be solved is asked
Topic.
Summary of the invention
The object of the present invention is to provide a kind of major key generation method of data collection point in redundant database, this method can be with
Identical data collection point major key consistency in active and standby library is effectively ensured, avoids in active and standby library there are major key conflict, eliminates
Security risk existing for power system management；It is a further object of the present invention to provide data collection points in a kind of redundant database
Major key generating means, equipment and computer readable storage medium.
In order to solve the above technical problems, the invention provides the following technical scheme:
The major key generation method of data collection point in a kind of redundant database, is applied to distribution network system, comprising:
When receiving data collection point record request, obtains selected major key and generate corresponding major key maximum value of mode；
Preset value is added to obtain the corresponding target point Major key in target data collection point described major key maximum value；
It is label with the target point Major key, master library and preset standby library is recorded in the target data collection point
In.
In a kind of specific embodiment of the invention, obtains selected major key and generates corresponding major key maximum value of mode,
Include:
Obtain the point major key maximum value generated under major key mode in trigger.
In a kind of specific embodiment of the invention, it is maximum to obtain the point major key generated under major key mode in trigger
Value, comprising:
Search the corresponding target device in the target data collection point；
Obtain the point major key maximum value of each data collection point in the target device.
In a kind of specific embodiment of the invention, adds preset value to obtain target data described major key maximum value and adopt
The corresponding target point Major key of collection point, comprising:
Database sum is added to obtain the corresponding target point Major key in target data collection point described major key maximum value；Its
In, the database sum is that the number of the master library adds the number in the standby library to obtain.
In a kind of specific embodiment of the invention, further includes:
When the master library failure, target is searched from each standby library according to preset rules for library；
The target is set as new master library for library.
In a kind of specific embodiment of the invention, the database sum is 10 or 100, in the master library to described
Target data collection point records successfully and there are under the premise of the standby library record failure, further includes:
When needing to summarize whole target data collection points, the low level phase of the target point Major key is chosen
The same target data collection point acquires point set as target data；Wherein, the digit of the low level is that the database is total
Several digits subtract 1.
In a kind of specific embodiment of the invention, further includes:
The identical redundancy object data collection point of target point Major key described in the collection of the target data collection point is rejected.
The major key generating means of data collection point in a kind of redundant database, are applied to distribution network system, comprising:
Major key obtains module, for obtaining selected major key and generating mode when receiving data collection point record request
Corresponding major key maximum value；
Major key computing module, it is corresponding for adding preset value to obtain target data collection point described major key maximum value
Target point Major key；
Data collection point logging modle, for being label with the target point Major key, by the target data collection point
It is recorded in master library and preset standby library.
The major key generating device of data collection point in a kind of redundant database, is applied to distribution network system, comprising:
Memory, for storing computer program；
Processor realizes the master of data collection point in redundant database as previously described when for executing the computer program
The step of key generation method.
A kind of computer readable storage medium is applied to distribution network system, stores on the computer readable storage medium
There is computer program, the computer program realizes data collection point in redundant database as previously described when being executed by processor
The step of major key generation method.
Using the major key generation method of data collection point in redundant database provided by the embodiment of the present invention, applied to matching
Network system obtains the point master under the major key generation mode currently selected when system receives data collection point record request
Key maximum value, according to the Major key for recording data collection point twice adjacent under pre-set currently selected major key generation mode
Difference adds preset value to obtain the corresponding target point Major key in target data collection point using the point major key maximum value got, with
Target point Major key is label, and target data collection point is recorded in master library and preset standby library.It is adjacent twice by setting
The difference for recording the Major key of data collection point, guarantees the point Major key of each data collection point recorded in the same database
Difference can be effective by being synchronized to same target data collection point and its target point Major key jointly from master library in standby library
Guarantee identical data collection point major key consistency in active and standby library, avoids in active and standby library there are major key conflict, eliminate electric power
Security risk existing for system administration.
Correspondingly, the embodiment of the invention also provides the major key generation methods with data collection point in above-mentioned redundant database
Major key generating means, equipment and the computer readable storage medium of data collection point in corresponding redundant database have upper
Technical effect is stated, details are not described herein.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of implementing procedure of the major key generation method of data collection point in redundant database in the embodiment of the present invention
Figure；
Fig. 2 is that the another of the major key generation method of data collection point implements stream in redundant database in the embodiment of the present invention
Cheng Tu；
Fig. 3 is a kind of structural frames of the major key generating means of data collection point in redundant database in the embodiment of the present invention
Figure；
Fig. 4 is a kind of structural frames of the major key generating device of data collection point in redundant database in the embodiment of the present invention
Figure.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one:
It is one kind of the major key generation method of data collection point in redundant database in the embodiment of the present invention referring to Fig. 1, Fig. 1
Implementation flow chart is applied to distribution network system, and this method may comprise steps of:
S101: it when receiving data collection point record request, obtains selected major key and generates corresponding major key of mode most
Big value.
It, can be to responsible calculating major key when the electric network data acquisition device in distribution network system collects data collection point
Broker program send data collection point record request, data collection point record request may include to the target that records of needs
The pre-selected major key of data collection point generates mode, and the broker program for being responsible for calculating major key can generate mould according to selected major key
Formula calculates the corresponding major key maximum value under the major key generation mode.
Whether major key generates mode can be according to major key be generated in trigger, and it is to trigger that major key, which is generated mode division,
Major key is generated in device and non-generates major key in trigger, naturally it is also possible to according to practical application scene demand, using others
Mode division rule generates mode to major key and divides, and it is not limited in the embodiment of the present invention.
S102: preset value is added to obtain the corresponding target point Major key in target data collection point a major key maximum value.
Mode is generated for each major key, the difference of the adjacent Major key for recording data collection point twice can be preset respectively
Value.After getting selected major key and generating corresponding major key maximum value of mode, can use this major key maximum value add it is pre-
If value obtains the corresponding target point Major key in the target data collection point for currently needing to record.
Preset value is usually set to positive integer, is more convenient in this case based on the target point Major key pair being calculated
Target data collection point is inquired.And it considers master library temporary fault, and just occurs before the failure primary active and standby
In the target point Major key synchronizing process of library, master library runs succeeded, one of them or several standby libraries execute the extreme case to fail,
Under this extreme case, if preset value is to be set as 1, the point major key maximum value in the standby library of failure is executed than failure master library
Point major key maximum value it is small by 1, if by chance select execute failure standby library take over failure master library, using execute failure standby library as newly
Master library can be based on running succeeded when being recorded by new master library to target data collection point next time than other last time
The value of standby library midpoint major key maximum value small 1 calculates the corresponding target point Major key in this target data collection point, since other are standby
Existing target point Major key in normal former master library has been restored in library, then marks new number of targets with the target point Major key
According to collection point, it will result in the identical situation of the corresponding target point Major key in the adjacent collection point of target data twice, that is, generate master
Key assignments conflict.It therefore, can be integer greater than 1 by default settings to prevent the phenomenon that Major key conflicts, it such as can be with
Be the sum of database by default settings, accordingly even when the point major key maximum value in existing master library is smaller, will not generate and its
He for library collision target point Major key.
S103: it is label with target point Major key, target data collection point is recorded in master library and preset standby library.
It can be mark with target point Major key after the corresponding target point Major key in target data collection point is calculated
Note, target data collection point is recorded in master library and preset standby library, so that target data collection point is in master library
It is identical with corresponding target point Major key in standby library, it can to guarantee same in the master library of entire distribution system and each standby library
Only one Major key of target data collection point exists, and the Major key has uniqueness, avoids active and standby library with " fissure "
Mode respectively carries out Major key calculating, so that it is the high reliablity of this Major key generating mode, high-efficient, and in entire major key
During generating algorithm is realized, there is no the characteristics exclusive using certain relevant database, so that the Major key generates
Mode has universality, and versatility is high.
During active and standby library target point Major key record, runs succeeded even if there is master library, there is standby library and execute mistake
The case where losing also returns to application program and runs succeeded, when being recorded to new target data collection point next time, each standby library
In the target point Major key of the new target data collection point still keep identical as in master library, can change data collision in this way is
Shortage of data ensure that high availability and asynchronous.
Using the major key generation method of data collection point in redundant database provided by the embodiment of the present invention, applied to matching
Network system obtains the point master under the major key generation mode currently selected when system receives data collection point record request
Key maximum value, according to the Major key for recording data collection point twice adjacent under pre-set currently selected major key generation mode
Difference adds preset value to obtain the corresponding target point Major key in target data collection point using the point major key maximum value got, with
Target point Major key is label, and target data collection point is recorded in master library and preset standby library.It is adjacent twice by setting
The difference for recording the Major key of data collection point, guarantees the point Major key of each data collection point recorded in the same database
Difference can be effective by being synchronized to same target data collection point and its target point Major key jointly from master library in standby library
Guarantee identical data collection point major key consistency in active and standby library, avoids in active and standby library there are major key conflict, eliminate electric power
Security risk existing for system administration.
It should be noted that based on the above embodiment one, the embodiment of the invention also provides be correspondingly improved scheme.Rear
Involved in continuous embodiment with can mutually be referred between same steps or corresponding steps in above-described embodiment one, corresponding beneficial effect
Can also be cross-referenced, it is no longer repeated one by one in improvement embodiment below.
In a kind of specific embodiment of the invention, obtains selected major key and generates corresponding major key maximum value of mode,
It may comprise steps of:
Obtain the point major key maximum value generated under major key mode in trigger.
In more complicated relational database structure, to simplify application logic, database manipulation atom is ensured
Property, the Major key of target data collection point can be calculated in trigger.It, can be with when receiving data collection point record request
Obtain the point major key maximum value generated under major key mode in trigger.
In a kind of specific embodiment of the invention, it is maximum to obtain the point major key generated under major key mode in trigger
Value, comprising:
Search the corresponding target device in target data collection point；
Obtain the point major key maximum value of each data collection point in target device.
In data acquisition with supervisor control, which includes several electromechanical equipments, includes multiple under each equipment
Data collection point, can be set the corresponding equipment Major key of each equipment, and by the data type of each data collection point with
Equipment Major key is associated.The setting up procedure of equipment Major key may include obtaining master library when receiving equipment addition request
In equipment major key maximum value, using equipment major key maximum value add it is preset it is adjacent twice add equipment difference obtain mesh
The corresponding target device Major key of marking device is label with target device Major key, and master library is recorded in target device and is preset
Standby library in.It, can be according to pair of target data collection point and equipment Major key when receiving data collection point record request
It should be related to and search corresponding target device, and obtain the point major key in corresponding Major key of each data collection point of target device most
Big value.
The mode of major key is generated in trigger, can specifically use high-low-position strategy, and target data collection point is corresponding
A high position for target point Major key directly inheritance point target device Major key, low level use data collection point under same equipment suitable from increasing
The mode of serial number sets low level such as two, and target device Major key is indicated with dev_id, and data collection point increases certainly under same equipment
Serial number indicates that target point Major key is indicated with pnt_id with pnt_order, and the calculation of target point Major key can pass through
Following formula is calculated:
Pnt_id=dev_id*100+pnt_order.
In such a case, it is possible to data collision mistake is strictly limited within the same equipment, based on inside this library
Data carry out operation, error diffusion can be effectively prevented, avoid fissure.Because the collection point quantity under an equipment is pole
Its is limited, in case of data collision mistake, can then re-create the methods of equipment by sweep equipment completely
It is remedied, can also achieve the effect that effectively controlling later data repairs difficulty.
Embodiment two:
Referring to fig. 2, Fig. 2 be in the embodiment of the present invention in redundant database the major key generation method of data collection point it is another
Kind implementation flow chart, is applied to distribution network system, and this method may comprise steps of:
S201: it when receiving data collection point record request, obtains selected major key and generates corresponding major key of mode most
Big value.
S202: database sum is added to obtain the corresponding target point Major key in target data collection point a major key maximum value.
Wherein, database sum is that the number of master library adds the number in standby library to obtain.
Database sum can be set by the difference of the adjacent Major key for recording data collection point twice, when getting
After selecting major key to generate corresponding major key maximum value of mode, database sum can be added to obtain number of targets a major key maximum value
According to the corresponding target point Major key in collection point.Database sum is that the number of master library adds the number in standby library to obtain, because existing
In the case where redundant database, database sum is the arbitrary integer more than or equal to 2, therefore can be avoided the occurrence of in embodiment one
Conflict under extreme case improves reliability.
In a kind of specific embodiment of the invention, this method may also comprise the following steps::
When master library failure, target is searched from each standby library according to preset rules for library；
Target is set as new master library for library.
The longtime running of database, can be preparatory such as the case where unstable networks it is possible that the case where temporary fault
When current master library failure is set, for taking over the standby library of failure master library, it is automatic to be reached into active and standby library as new master library for library for this
The effect of switching such as can be and select the smallest standby library of CPU load as new master library from standby library, be also possible to from standby library
It selects the smallest standby library database accession number DBID as new master library, specifically this is not done using which kind of regular embodiment of the present invention
It limits.When master library failure, target can be searched from each standby library according to preset rules for library, target is set as new for library
Master library takes over the record that failure master library carries out data collection point using new master library, guarantees the smooth execution of record operation.
In a kind of specific embodiment of the invention, database sum is 10 or 100, is acquired in master library to target data
Under the premise of point records successfully and there is standby library record failure, this method may also comprise the following steps::
When needing to summarize target complete data collection point, the identical target of low level of target point Major key is chosen
Data collection point acquires point set as target data；Wherein, the digit of low level is that the digit of database sum subtracts 1.
Based on the above embodiment, database sum can be set to 10 or 100, in this case, when needs are to whole
When target data collection point is summarized, the identical target data collection point of low level of target point Major key can be chosen as mesh
Data collection point collection is marked, when N takes 10, the digit of low level is 1, only by last identical number of targets of target point Major key
It selects to come according to collection point, so that it may constitute target data acquisition point set.When N takes 100, the digit of low level is 2, only by target
Last two identical target data collection points of point Major key, which select, to be come, so that it may constitute target data acquisition point set.?
In this case, so that it may which each target data collection point for guaranteeing that target data collection point is concentrated is based on the same database
What library was recorded, be that the major key generated is stamped with database accession number to introduce database accession number in major key generating algorithm
Label, indicates that current target point Major key is generated in which master library, the integrality of the data got can be improved.
In a kind of specific embodiment of the invention, this method may also comprise the following steps::
The identical redundancy object data collection point of target point Major key is concentrated to reject target data collection point.
Based on the above embodiment, the target data acquisition point set being made of the identical target data collection point of low level is got
Later, target data collection point identical compared with multiple target point Major key may be had by being concentrated due to target data collection point, because
This can concentrate target data collection point the identical redundancy object data collection point of target point Major key to reject, so that number of targets
The data concentrated according to collection point are more succinct, facilitate the subsequent research to each target data collection point.
S203: it is label with target point Major key, target data collection point is recorded in master library and preset standby library.
Corresponding to above method embodiment, the embodiment of the invention also provides data collection points in a kind of redundant database
Major key generating means, be applied to distribution network system, the major key of data collection point generates dress in redundant database described below
Reference can be corresponded to each other with the major key generation method of data collection point in above-described redundant database by setting.
Referring to Fig. 3, Fig. 3 is the major key generating means of data collection point in redundant database a kind of in the embodiment of the present invention
Structural block diagram, the apparatus may include:
Major key obtains module 31, for obtaining selected major key and generating mould when receiving data collection point record request
Corresponding major key maximum value of formula；
Major key computing module 32 adds preset value to obtain the corresponding mesh in target data collection point for that will put major key maximum value
Punctuate Major key；
Target data collection point is recorded for being label with target point Major key for data collection point logging modle 33
In master library and preset standby library.
Using the major key generating means of data collection point in redundant database provided by the embodiment of the present invention, applied to matching
Network system obtains the point master under the major key generation mode currently selected when system receives data collection point record request
Key maximum value, according to the Major key for recording data collection point twice adjacent under pre-set currently selected major key generation mode
Difference adds preset value to obtain the corresponding target point Major key in target data collection point using the point major key maximum value got, with
Target point Major key is label, and target data collection point is recorded in master library and preset standby library.It is adjacent twice by setting
The difference for recording the Major key of data collection point, guarantees the point major key of each data collection point of the record in the same database
Value is different, can be effective by being synchronized to same target data collection point and its target Major key jointly from master library in standby library
Guarantee identical data collection point major key consistency in active and standby library, avoids in active and standby library there are major key conflict, eliminate electric power
Security risk existing for system administration.
In a kind of specific embodiment of the invention, it is specially to obtain to generate in trigger that Major key, which obtains module 31,
The module of point major key maximum value under major key mode.
In a kind of specific embodiment of the invention, Major key obtains module 31, comprising:
Equipment searches submodule, for searching the corresponding target device in target data collection point；
Major key acquisition submodule, for obtaining the point major key maximum value of each data collection point in target device.
In a kind of specific embodiment of the invention, Major key computing module 32 is specially that will put major key maximum value addend
The module of the corresponding target point Major key in target data collection point is obtained according to library sum；Wherein, database sum is master library number
Standby library number is added to obtain.
In a kind of specific embodiment of the invention, which can also include:
Standby library lookup module, for searching target from each standby library according to preset rules for library when master library failure；
Master library setting module, for target to be set as new master library for library.
In a kind of specific embodiment of the invention, database sum is 10 or 100, which can also include:
Point set chooses module, for before master library records target data collection point successfully and there is standby library record failure
It puts, when needing to summarize target complete data collection point, chooses the identical number of targets of low level of target point Major key
Point set is acquired as target data according to collection point；Wherein, the digit of low level is that the digit of database sum subtracts 1.
In a kind of specific embodiment of the invention, which can also include:
Data collection point rejects module, for the identical redundancy object of target point Major key to be concentrated in target data collection point
Data collection point is rejected.
Corresponding to above method embodiment, referring to fig. 4, Fig. 4 is that data are adopted in redundant database provided by the present invention
The schematic diagram for collecting the major key generating device of point, is applied to distribution network system, which may include:
Memory 41, for storing computer program；
Processor 42 can realize following steps when for executing the computer program of the above-mentioned storage of memory 41:
When receiving data collection point record request, obtains selected major key and generate corresponding major key maximum value of mode；
Preset value is added to obtain the corresponding target point Major key in target data collection point a major key maximum value；It is mark with target point Major key
Note, target data collection point is recorded in master library and preset standby library.
Above method embodiment is please referred to for the introduction of equipment provided by the invention, this will not be repeated here by the present invention.
Corresponding to above method embodiment, the present invention also provides a kind of computer readable storage mediums, are applied to distribution
Net system is stored with computer program on computer readable storage medium, can realize such as when computer program is executed by processor
Lower step:
When receiving data collection point record request, obtains selected major key and generate corresponding major key maximum value of mode；
Preset value is added to obtain the corresponding target point Major key in target data collection point a major key maximum value；It is mark with target point Major key
Note, target data collection point is recorded in master library and preset standby library.
The computer readable storage medium may include: USB flash disk, mobile hard disk, read-only memory (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit
Store up the medium of program code.
Above method embodiment is please referred to for the introduction of computer readable storage medium provided by the invention, the present invention exists
This is not repeated them here.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
It sets, for equipment and computer readable storage medium, since it is corresponded to the methods disclosed in the examples, so the comparison of description
Simply, reference may be made to the description of the method.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand technical solution of the present invention and its core concept.It should be pointed out that for the common of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these
Improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (10)
1. the major key generation method of data collection point in a kind of redundant database, which is characterized in that be applied to distribution network system, packet
It includes:
When receiving data collection point record request, obtains selected major key and generate corresponding major key maximum value of mode；
Preset value is added to obtain the corresponding target point Major key in target data collection point described major key maximum value；
It is label with the target point Major key, the target data collection point is recorded in master library and preset standby library.
2. the major key generation method of data collection point in redundant database according to claim 1, which is characterized in that obtain
Selected major key generates corresponding major key maximum value of mode, comprising:
Obtain the point major key maximum value generated under major key mode in trigger.
3. the major key generation method of data collection point in redundant database according to claim 2, which is characterized in that obtain
The point major key maximum value under major key mode is generated in trigger, comprising:
Search the corresponding target device in the target data collection point；
Obtain the point major key maximum value of each data collection point in the target device.
4. the major key generation method of data collection point, feature in redundant database according to any one of claims 1 to 3
It is, adds preset value to obtain the corresponding target point Major key in target data collection point described major key maximum value, comprising:
Database sum is added to obtain the corresponding target point Major key in target data collection point described major key maximum value；Wherein,
The database sum is that the number of the master library adds the number in the standby library to obtain.
5. the major key generation method of data collection point in redundant database according to claim 4, which is characterized in that also wrap
It includes:
When the master library failure, target is searched from each standby library according to preset rules for library；
The target is set as new master library for library.
6. the major key generation method of data collection point in redundant database according to claim 5, which is characterized in that described
Database sum is 10 or 100, records successfully in the master library to the target data collection point and there are the standby libraries to record
Under the premise of failure, further includes:
When needing to summarize whole target data collection points, the low level for choosing the target point Major key is identical
The target data collection point acquires point set as target data；Wherein, the digit of the low level is the database sum
Digit subtracts 1.
7. the major key generation method of data collection point in redundant database according to claim 6, which is characterized in that also wrap
It includes:
The identical redundancy object data collection point of target point Major key described in the collection of the target data collection point is rejected.
8. the major key generating means of data collection point in a kind of redundant database, which is characterized in that be applied to distribution network system, packet
It includes:
Major key obtains module, for when receiving data collection point record request, it is corresponding that the selected major key of acquisition generates mode
Point major key maximum value；
Major key computing module, for adding preset value to obtain the corresponding target in target data collection point described major key maximum value
Point Major key；
Data collection point logging modle records the target data collection point for being label with the target point Major key
Into master library and preset standby library.
9. the major key generating device of data collection point in a kind of redundant database, which is characterized in that be applied to distribution network system, packet
It includes:
Memory, for storing computer program；
Processor is realized when for executing the computer program and is counted in redundant database as described in any one of claim 1 to 7
According to collection point major key generation method the step of.
10. a kind of computer readable storage medium, which is characterized in that be applied to distribution network system, the computer-readable storage
It is stored with computer program on medium, realizes when the computer program is executed by processor such as any one of claim 1 to 7 institute
The step of stating the major key generation method of data collection point in redundant database.
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