JPH07182215A - Data managing device - Google Patents

Abstract

PURPOSE:To provide a data managing device capable of quickly and easily executing change in the storing order of data or the addition/deletion of data on the way of the order. CONSTITUTION:The data managing device is provided with an instruction registering processing part 2 for dividing data into an index part and a data part, an external storage device 31 for storing the divided data part, an address adding part 5 for adding an address storing the data part to the index part, internal and external storage devices 30, 31 for storing the index part to which the address is added, an instruction deleting processing part 3 for deleting the index part and substituting the storing order, and an instruction changing processing part 4 for substituting the storing orders of the index part for each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data management device, and more particularly to a data management device that stores a plurality of data in order.

[0002]

2. Description of the Related Art Important data such as the data of a work flowing on a production line such as a factory and the production status are stored in a hard disk, a magnetic tape or the like as a file, and the data is read from the file. , By writing again.

As the data in this file, data that is taken out and used in the order in which it is stored in the file, such as production instruction data, that is, the content of the data is of course stored. The order in which they are stored is also meaningful, and the storage order itself is a source of information necessary for processing.

Conventionally, when data is added or changed in a file storing data whose information storage order itself is an information source, at least data to be added or changed The data that follows,
Alternatively, all the data is read once, data in the middle is added or changed, and then the data is re-stored in a disk or the like.

For example, as shown in FIG. 7, data having a long record length such as production instruction data and production management data,
Here, a high-order computer, which centrally manages all lines, takes out about 1 kbyte of production instruction data in the stored order and sends it to the low-order computer of each process on the production line, and the low-order computer receives it. The production instruction data is attached with a production progress status such as transmission completion or input completion, a flag used for determination of instruction change, additional data, etc., and output as production management data. These production instruction data and production management data are collectively stored in one file in a hard disk or a magnetic tape, which is a storage device of a host computer or a data management device that only manages the data.

As shown in FIG. 7, the production instruction data and the production management data as described above are the actual (rank) numbers.
The pieces are lined up in order from 1, and the production instructions are sent in that order by being taken out in the order in which they are given to the work. When the order is changed, for example, the actual No. The data of No. 50 is No. In the case of inserting after the No. 1, the actual No. No. 50 is read, No. 1 followed by No. No. 50 data is written, and then No. Data after 2 are read in order (read), No. After 50, writing (writing) is performed, and read / write is similarly repeated for the subsequent data (No. 3 and later) to rewrite up to the last data. Such data replacement work is not limited to changing the order, and is also performed when data is added midway or when data midway is deleted.

[0007]

However, in a large-scale production line, a large number of data are managed as one file, some of which have about 5000 data. Data is not stored in an internal storage device such as a RAM in a computer that performs processing, but must be stored in an external storage device having a large storage capacity such as a hard disk or a magnetic tape.

Therefore, in the conventional data management, when a change (including addition, deletion, etc.) is made to one piece of data, other data is also read and written. However, there was a problem that it took a lot of time to rewrite. In this way, if it takes time to change the data, such as production instruction data, if you make changes to the data that manages the production line, spend time on this change, etc.
In the worst case, the production line itself may be stopped due to delays in fetching and outputting the production instruction data, and it is not possible to make changes at any time, so only when the production line is stopped due to maintenance, etc. I couldn't. However, such changes themselves need to be made appropriately according to the progress of production, and if they can be done only when the production line is stopped, this also hinders production itself. There is.

Therefore, according to the present invention, in a system in which a large amount of data is stored in order, it is possible to easily change, in a short time, the storage order of data and to add or delete data in the middle. It is to provide a management device.

[0010]

The present invention for solving the above-mentioned problems is a data management apparatus for storing a plurality of data in order, wherein each data in the plurality of data is used as an index portion. Data dividing means for dividing the data portion, an external storage device for storing the data portion divided by the data dividing means, and the index portion,
Address adding means for adding an address of the external storage device in which the data portion is stored; an internal storage device for storing the index portion to which the address of the data portion stored in the external storage device is added; The external storage device for storing the index part added with the address of the data part stored in the external storage device, the internal storage device, and the index part stored in the external storage device are deleted, and the storage order is changed. A data management device comprising: a deletion processing unit for packing and a change processing unit for changing a storage order of the index portions stored in the internal storage device and the external storage device.

[0011]

According to the present invention configured as described above, each data stored in plural by the data dividing means is divided into an index portion and a data portion, so that one data is identified only by an index portion having a short record length. As a result, the address of the divided data portion stored in the external storage device is added to this index portion by the address addition means, thereby making the correspondence between the index portion and the data portion, and adding the address. By storing the parts in the internal storage device and the external storage device, processing such as deletion of data, replacement of storage order, addition to the storage order in the middle, etc. is performed only on the index part by the deletion processing means and the change processing means. To delete these data, change the storage order, and add to the intermediate storage order. Such as it is possible to shorten the time of processing. Since the index part is also stored in the external storage device, when the data of the index part in the internal storage device disappears, it is possible to restore it by calling the data of the index part in the external storage device. did.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram of a data management device to which the present invention is applied. As shown in the figure, the structure of this data management device is such that an index file automatic creation unit 1 for dividing the basic data into an index section and a data section, and a basic instruction storing the basic data (production instruction data in this embodiment). A data file 10, an index file creation table 11 that stores information defining from which part the basic data is to be divided, and an instruction on the internal storage device 30 that stores the index part divided by the index file automatic creation unit 1. Index file 1
2. Similarly, an external storage device 3 for storing the index part
1. The instruction index file 13 on 1, the instruction data file 14 on the external storage device 31 for storing the divided data portion, and the instruction deletion file for storing unnecessary data in the production instruction data input from the input means 20 described later. 15 and an input means 20 such as a keyboard having a display device such as a display. The inside of the index file automatic creation unit 1 is a data dividing unit that divides the basic instruction data into an index portion and a data portion to perform registration, and a deletion processing unit that deletes unnecessary instruction data. An instruction deletion processing unit 3 for changing the instruction data, an instruction changing processing unit 4 for changing or adding instruction data, and an address adding unit 5 for adding an address storing means for storing a data portion to an index portion. Consists of.

The internal storage device 30 is a volatile memory such as a RAM in the data management device, which generally has a high read / write speed, but cannot store a large amount of data at one time. In addition, the external storage device 3
In general, 1 is a non-volatile hard disk or magnetic tape, which can store a large amount of data, but the read / write speed becomes slow when the data length is long.

The functional operation of each part of the data management apparatus will be described below separately for each of the basic data division registration processing, the deletion processing, and the change addition processing.

In the basic data division registration process, as shown in the flowchart of FIG. 2, first, the instruction registration processing unit 2 reads basic data (production instruction data in this embodiment) from the basic instruction data file 10 (S1). ), The division information of the index file creation table 11 to be described later is read (S2), and the division is made into the index portion and the data portion based on this division information (S3). The divided data portion is stored in the instruction data file 14 on the external storage device 31 (S4), while the divided index portion has the address of the instruction data file 14 of the external storage device 31 in which the data portion is stored. The same is stored in the instruction index file 12 in the internal storage device 30 and the instruction index file 14 in the external storage device 31 (S6) by being added by the address adding unit 5 which is an address adding means (S5). By this division, long base data in which one record is 1 kbyte or more is divided into an index part of about several bytes and a data part forming a main part of information.

The contents of the divided index portion and data portion are, for example, in the case of the production instruction data shown in FIG. 7 described above as basic data, the index portion is shown in FIG.
As shown in FIG. And engine No.
Is the address on the external storage device 31 in which the data portion and the data title are stored. On the other hand, the data part is various information such as a mounting instruction code necessary for production instructions and equipment operation buttons. Also, although not shown, the data part in the case of production management data is production progress such as completion of transmission and completion of input. It is provided with a flag, additional data, etc. used for judging the situation and the instruction change.

The index file creation table 11 contains division information that predefines at which position the basic data should be divided into an index portion and a data portion. To how many bytes are used as the index part ", or" how many bytes to how many bytes are used as the index part "
Such information.

Next, in the deletion processing, as shown in the flowchart of FIG. 4, an instruction to delete unnecessary instruction data is input from the input means 20 (S11), and the instruction deletion processing unit 3 which receives this instruction deletes the instruction. The index portion of the commanded data is searched from the instruction index file 12 on the internal storage device 30 (S12), the address of the data portion added to the index portion is detected, and the instruction deletion file 15 temporarily stores this address. The addresses of the index part and the data part are registered (S13). Then, the instruction registration processing unit 12 deletes the index portion of unnecessary data from the instruction index file 12 on the internal storage device 30 and the instruction index file 13 on the external storage device 31 (S14), and deletes from the deleted portion. The data in the is justified (S15).

At this time, the unnecessary data portion in the instruction data file portion 14 in which the data portion is stored is left as it is because the data in the instruction data file 14 has a large record length. In addition, it is possible to prevent the processing time from being lengthened by deleting the data and performing the forward packing operation. To delete unnecessary data in this instruction data file 14,
When there is enough processing time (when it is not necessary to perform processing other than this processing), the deletion is performed by referring to the address of the deletion commanded data stored in the instruction deletion file 15. If the addresses are rearranged at this time, the addresses of the data portions added to the respective index data of the index portion are also changed. However, if the address of the data part is not rearranged, it is not necessary to process the data of the index part.

Next, in the data modification / addition processing, as in the flow chart shown in FIG. 5, a modification command is issued from the input means 20 (S21), and the instruction modification processing unit 4 which has received this modification command is instructed to modify. The index portion of the data is searched from the instruction index file 12 on the internal storage device 30 (S22), and the order is changed, and
The order of the same index parts is also changed for the index parts in the designated index file 13 on the external storage device 31 (S23).

Further, in the addition processing, as shown in the flowchart of FIG. 6, all the basic data to be added are input from the input means 20 and the addition order is input (S).
31), similarly to the instruction registration process, the basic data is divided (S32), and a free address or the last address of the instruction data file 14 of the external storage device 31 is allocated to the data portion. It is stored (S33), and the address is added to the data of the index portion (S34). The index portion is inserted into the designated index file 12 in the internal storage device 30 and the designated index file 13 in the external storage device 31 at the designated order (S35). Then, the work of replacing the index portions in the instruction index file 12 and the instruction index file 13 is performed (S36).

The data management device of the present invention as described above is
For example, it is suitable for use in a computer for production management that issues a production instruction to a production line, and the production instruction data and production management data (FIG. 7) having a long record length that cannot be handled only by an internal storage device such as a RAM. (See) is divided into an index part with a short record length and a data part with a long record length that occupies a major part such as production instruction data. By referring to the address of the data part added to the part, the data is taken out and the production instruction is issued, and if the production instruction data is deleted, changed, or added, the processing time can be shortened if only the index part is performed. it can.

Therefore, the response to the production instruction does not deteriorate due to the processing for managing these data. Further, this index part is stored in the internal storage device 30.
In addition to the above-mentioned instruction index file 12, a similar instruction index file 13 is provided on the external storage device 31 so that when the data management device goes down due to a power failure or the like, the external storage device 31 can be used for recovery. By calling the above-mentioned instruction index file 13 to the instruction index file 12 in the internal storage device 30, it is possible to return to the same normal state as before the power failure, and it is possible to shorten the time required for recovery work. Note that the instruction index file 13 on the external storage device 31 is also subjected to the same registration, deletion, and change processing as the instruction index file 12 on the internal storage device 30 as described above. Since the record length is short, the processing time becomes long and does not interfere with other processing.

Further, according to the present invention, in the case of data management in which the storage order of data is not a particular problem, that is, random access data management in which data is retrieved or referenced from an arbitrary storage location, By counting the access frequency of data that has been fetched or referenced, and dividing only the frequently accessed data into an index part and a data part by the data management device according to the present invention, only the index part When dealing with a large amount of data that cannot be stored in the internal storage even if the above is taken, only the frequently accessed data is divided and the frequently accessed index part is stored in the internal storage device. By doing so, it is also possible to raise the processing response such as replacement, deletion, addition of multiple data. That.

[0026]

As described above, the data management device of the present invention divides each data of a plurality of stored data into an index part and a data part, and the index part is an internal storage device and an external storage device. In addition, since the data part is stored in the external storage device respectively, one data is identified only by the index part, and the storage order is changed or deleted only by the index part. It is possible to shorten the processing time such as replacement and addition to the storage order in the middle. Also,
Since the index part is also stored in the external storage device, when the data of the index part in the internal storage device disappears, the processing time for restoring by calling the data of the index part in this external storage device. To shorten.

[Brief description of drawings]

FIG. 1 is a block diagram of a data management device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a division registration operation according to the above embodiment.

FIG. 3 is an example of division into an index portion and a data portion according to the above embodiment.

FIG. 4 is a flowchart of a deleting operation according to the above embodiment.

FIG. 5 is a flowchart of a changing operation according to the above embodiment.

FIG. 6 is a flowchart of an additional operation according to the above embodiment.

FIG. 7 is an example of data for explaining conventional data management.

[Explanation of symbols]

 1 ... Index file automatic creation unit 2 ... Instruction registration processing unit 3 ... Instruction deletion processing unit 4 ... Instruction change processing unit 5 ... Address addition unit 10 ... Basic instruction data file 11 ... Index file creation table 12, 13 ... Instruction index file 14 ... instruction data file 15 ... instruction deletion file 20 ... input means 30 ... internal storage device 31 ... external storage device

Claims (1)

[Claims] 1. A data management device that stores a plurality of data in order, wherein the data dividing means divides each data of the plurality of data into an index portion and a data portion, and the data dividing means. An external storage device for storing the divided data portion; an address adding means for adding, to the index portion, an address of the external storage device in which the data portion is stored; and the data stored in the external storage device. An internal storage device for storing the index part added with the address of the part, an external storage device for storing the index part added with the address of the data part stored in the external storage device, the internal storage device and the Deletion processing hand that deletes the index portion stored in the external storage device and moves the storage order forward And a change processing unit for changing the storage order of the index portions stored in the internal storage device and the external storage device.