Database partial replica generation system

Details Database partial replica generation system Database partial replica generation system

1996-08-08

1998-05-26

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 3, G06F 1730

Patent

active

057583374

ABSTRACT:
A system for creating database partial replicas is provided where the referential integrity of the original database is maintained in the partial replica. Filters are specified to allow a user to select, using boolean logic, which rows of the original database are to be propagated to the partial replica. A row containing the primary key corresponding to a foreign key of a row propagated to the partial replica is also propagated to the partial replica. Also, a filter may be specified to include rows that are part of a relationship between multiple record sources. The result is a partial replica database containing only those records desired by the user but also all the records necessary to maintain the referential integrity of the original database.

REFERENCES:
patent: 4482970 (1984-11-01), Barry
patent: 4885677 (1989-12-01), Heilman et al.
patent: 4941191 (1990-07-01), Miller et al.
patent: 5109384 (1992-04-01), Tseung
patent: 5315539 (1994-05-01), Hawes
patent: 5487023 (1996-01-01), Seckora

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