Hierarchical environments supporting relational schemas

Details Hierarchical environments supporting relational schemas Hierarchical environments supporting relational schemas

2006-08-29

2006-08-29

Mizrahi, Diane D. (Department: 2165)

Data processing: database and file management or data structures

Database design

Data structure types

Reexamination Certificate

active

07099887

ABSTRACT:
A method, apparatus and article of manufacture for implementing a relational schema comprising at least one many-to-many relationship in a hierarchical database supporting one-to-many relationships, the relational schema being defined by a plurality of entities including at least one first entity having N components and at least one second entity having M components, the first and the second entity having a many-to-many relationship. One embodiment comprises creating a bridging table to transform the many-to-many relationship between the first and the second entities into a one-to-many relationship between the first entity and the bridging table and a one-to-many relationship between the bridging table and the second entity. For each mapping between one of the N components and one of the M components, an entry is created in the bridging table, the entry comprising a mapping between the one of the N components and the one of the M components.

REFERENCES:
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patent: 6263342 (2001-07-01), Chang et al.
patent: 6578046 (2003-06-01), Chang et al.
patent: 2002/0174124 (2002-11-01), Haas et al.
patent: 2003/0028551 (2003-02-01), Sutherland

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