JPH0267677A - Low level code maintenance system - Google Patents

Abstract

PURPOSE:To attain updating reducing the frequency of retrieval and that of updating in a parts list and having high processing efficiency by substituting information storing order, generating an updating instruction and optimizing the deleting order of article constituting information of an article past its term of validity. CONSTITUTION:A parts table updating part 1 changes and deletes the registration of corresponding information in accordance with the input of updating information such as article information or the like. When a retrieval request 20 is inputted from the external, a parts list retrieving part 4 retrieves expired article constituting information A-B, B-C, C-D in the parts list from an article constituting information storage part 3 and stores the retrieved result in an extracted information storage part 5 as extracted information together with the low level code of the article. An extracted information arranging part 6 arranges the stored extracted information in the order of slave article low level codes and slave article numbers. The updating part 1 deletes the expired article constituting information in the order of arrangement. Consequently, the updating frequency of the low level code can be sharply reduced as compared to an ordinary method.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a low-level code maintenance method, and particularly to a low-level code maintenance method for managing a parts list that undergoes frequent specification changes.

[Conventional technology]

A parts list is an information list of parts necessary to construct one article. A parts list consists of item (parts themselves) information and item structure (parent-child relationships of items) information. Furthermore, the low-level code is a number that is kept as part of the item information and indicates the maximum level of the hierarchy from the top-level item, and plays an important role in processing using the bill of materials. There is. FIG. 3 shows an example of a parts list and low-level code.

In the parts list in Figure 3, item A is composed of B and C, item B is composed of D, item C is composed of E, and the item number is E.
It is made up of. The low level code (denoted as LLC in the figure) is LLC = 1 because item A has no higher order item.
The low-level codes of items B and C are both second from the higher-level item A, so LLC = 2, and the item number is L in the same way.
LC=3, item E is third after item C, but item B
, D is the fourth location, so LLC=4.

Conventionally, the validity period of such parent-child relationships has been retained as item structure information, but in order to improve processing efficiency related to bill of materials, it is necessary to periodically delete item structure information whose validity period has expired. be.

In the conventional low-level code maintenance method, each time item structure information with an expiration date was detected, the item structure information was deleted, and the low-level code was accordingly updated each time.

For example, in a simple parts list 11 as shown in FIG. 4, all item configuration information (A-BB-C, CD) has an expiration date, and If the parts are detected and deleted in the order of -D, the low-level code will be updated six times as shown in the parts list 22 to parts table 24. Moreover, not only are items C and D repeatedly updated, but searches for parts lists are frequently used for this purpose.

[Problem to be solved by the invention]

In the conventional low-level code maintenance method described above, item configuration information with an expiration date was deleted every time it was detected, which resulted in many duplicate low-level code updates for common items, reducing processing efficiency. There is a problem that (processing takes time).

Therefore, the present invention provides an efficient method for reducing the number of parts list updates and searches by optimizing the deletion order of item configuration information whose expiration date has expired.

[Means to solve the problem]

The low-level code maintenance method of the present invention includes: an item configuration information storage means for storing configuration information between a plurality of items constituting a bill of materials; and updating of the item configuration information storage means in response to an instruction to update the bill of materials. a parts list updating means for searching and extracting corresponding information from the information stored in the item configuration information storage means in response to a search request for the parts list given from the outside; Extracted information storage means for storing information searched and extracted by the parts list retrieval means; Extracted information sorting means for changing the storage order of the information stored in the extracted information storage means and issuing the update instruction. It is characterized by

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention, in which the item information and item configuration information constituting the parts list are updated in response to an external update request 10 or an instruction from the extracted information sorting unit 6. A table update unit 1, an item information storage unit 2 that stores item information in a bill of materials, an item configuration information storage unit 3 that stores item configuration information in a bill of materials, and a search request 2 from the outside.
0, an extraction information storage unit 5 that stores item configuration information and low-level codes from the searched parts list, and extracts the contents stored in the extracted information as a child. It is composed of an extracted information sorting section 6 that sorts items in the order of low-level codes of product numbers, and an extracted information searching section 7 that sequentially retrieves the contents stored in the extracted information storage section.

Item information is unique information about the item itself, such as item number, item name, time required for manufacturing, and low-level code. In addition, item structure information is unique information regarding the parent-child relationship between items, such as parent item number, child item number, and quantity relationship.

This is data such as validity period.

The parts list update unit 1 changes the registration and deletes the corresponding information in response to the input of update information regarding at least one of the above-mentioned item information and 1-item configuration information. A read/write two-part write technique is used. Parts list search section 4. Extraction information string part 6. The extracted information retrieval unit 7 is also realized by a similar technique.

FIG. 2 shows the process of updating the parts list shown in FIG. 4 according to this embodiment. The operation of this embodiment will be explained below with reference to FIG.

First, when a search request 20 is input from the outside, the parts list search section 4 searches the item structure information storage section 3 for item structure information A-B, BC2, and CD whose expiration date has expired, and loads the item. It is stored in the extraction information storage unit 5 as extraction information together with the level code.

Next, the extracted information sorting section 6 sorts the stored extracted information in the order of the low level code of the child item and the child item number. Then, the parts list updating unit 1 deletes the item configuration information whose expiration date has expired in the item configuration information storage unit 3 in the sorted order. As a result, it can be seen that in this example, the number of times the low-level code is updated can be reduced from the maximum of six times in the conventional method to three times.

〔Effect of the invention〕

The present invention has the advantage that by optimizing the deletion order of item configuration information whose expiration date has expired, it is possible to search and update a parts list with less processing and weight.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing one embodiment of the present invention, Figure 2 is a diagram for explaining the operation of this implementation, Figure 3 is a conceptual diagram of a parts list and low-level code, and Figure 4 is a conventional system. FIG. 3 is a diagram illustrating an example of low-level code update by. 1... Parts list update section, 2... Item information storage section, 3.
...Item configuration information storage section, 4...Parts list search section, 5.
... Extracted information storage unit, 6... Extracted information alignment unit, 7...
- Extracted information search section.

Claims (1)

[Scope of Claims] Item configuration information storage means for storing configuration information among a plurality of items constituting a parts list; and a parts list that updates the item configuration information storage unit in response to an instruction to update the parts list. an updating means; a parts list retrieval means for searching and extracting corresponding information from information stored in the item configuration information storage means in response to a search request for the parts list given from the outside; and by the parts list retrieval means. It is characterized by comprising an extracted information storage means for storing searched and extracted information, and an extracted information sorting means for changing the storage order of the information stored in the extracted information storage means and issuing the update instruction. Low-level code maintenance method.