摘要:
A plurality of conveying apparatuses ace arranged from the inside of the first building to the inside of the second building along a conveying direction. A plurality of connection mechanisms connect each pair of adjacent conveying apparatuses such that the conveying apparatuses are arranged in a meandering manner in a case where relative positions between the first building and the second building are changed.
摘要:
An electrical form design and management method for conducting design and management on electrical forms provides a technique capable of improving the maintenance efficiency of electrical forms. The method includes a step of referencing mapping information, which associates electrical forms with components used in the electrical forms, and searching for electrical forms using an updated component, and a step of updating or adding components used in the electrical forms obtained by the search or mapping information of the electrical forms, and thereby updating or generating electrical forms.
摘要:
The system manages at least a database in multiple database storage units, and the database is duplicated for redundancy. The system maintains the database redundancy for security. The system enables the maintenance and reorganization of the database storage units without interrupting the on-going operations involving the access to the database storage units. The non-stop ongoing database access is available by allocating a pair of a main storage unit and an intermediate storage unit that maintains the substantially identical data. During certain predetermined operations, the main storage unit is being dedicating to the on-going transactions while the intermediate database storage unit is manipulated to contain data that corresponds to a specified time. For example, the content of the intermediate storage is subsequently copied or used to update another database. When the above duplication or incorporation is completed, the intermediate storage unit is updated for the transactions that have taken place during the above operations to be synchronized with the main storage unit.
摘要:
A method for processing a database for analyzing a query to the database from a user to determine an internal processing procedure therefor and executing it comprises the steps of preparing single or a plurality of internal processing procedures based on analysis result of the query including a variable inputted in a preprocess step and statistical information of a database system, selecting an optimum one of the internal processing procedures based on a value substituted for the variable of the query in a query execution stage and the statistical information of the database system, and executing the query in accordance with the selected internal processing procedure.
摘要:
After passing through the process in which the number of one page I/O requests generated in a certain unit time period, the number of multiple pages I/O requests, and the number of pages required at each of the multiple pages I/O request are input, the quantity of the I/O requests generated in the above-described unit time period is calculated in accordance with the thus-input values. The unit (the number of pages) for a multiple pages I/O actually performed by one time operation of the I/O control device corresponding to the multiple pages I/O request from users is determined in accordance with the user's instruction or specific criterion for the system based on the result of the above-described calculation, the performance of the CPU, the performance of the I/O control device, the performance of the DASD (Direct Access Storage Decive), and to which DASD each of I/O requests corresponds. The result of this determination is employed as the unit (the number of pages) for the multiple pages I/O performed by one time operation of the I/O control device. In case of the specific criterion for the system, the structure may be constituted in such a manner that it can be automatically changed in accordance with the state of change in the quantity of the I/O request.