Derived data base processing system enabling one program to access a plurality of data basis
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United States of America Patent
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Feb 16, 1999
Issued Date -
N/A
app pub date -
Nov 17, 1994
filing date -
Aug 31, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system comprises a dictionary for managing database logical definition information and database storage information in a secondary memory, a derived database registering unit for determining a definition frame of a new name without violating a definition frame of a name used in a schema definition which defines data in a database, a dictionary information manipulating means for referring to said dictionary when the manipulation target is a derived database, then selecting necessary components of said database, and a database processing procedure generating unit, in a binding process to optimize access routing in a database.
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