Database schema independence

Details Database schema independence Database schema independence

1996-10-16

1999-10-26

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 4, 707 10, 707102, 705 26, G06F 1730

Patent

active

059744189

ABSTRACT:
An application, such as an online merchant system, provides a name for a query stored in a database. The database accesses the query using the name provided by the application. The database next executes the query to produce an access object having the query results. The application then processes the access object to obtain a selected result. Storing queries in the database provides a level of indirection and flexibility enabling applications to access databases without prior knowledge of their schemas. Thus, applications can access data in a wide variety of existing databases having different schemas and data sublanguages. Modification of the database schema does not require corresponding modification or recompilation of the application accessing the database.

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eShop Technology overview, Internet address: http://www.eshop.com/corp/technology.html. This reference was copied from the Internet and printed in or about May 1996; the pages are dated Jan. 1, 1996.
eShop In The News--Recent Press Release, Internet address: http://www.eshop.com/corp/press.html. This reference was copied from the Internet and printed in or about May 1996; the pages are dated Jan. 1, 1996. Dates are listed for press releases of Nov. 7, 1995, Dec. 7, 1995 and Jan. 23, 1996.
eShop.TM. Technology Merchant Manual, Feb. 21, 1996. This document contains proprietary material subject to M.P.E.P. .sctn. 724.

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