Data abstraction layer for a database

Details Data abstraction layer for a database Data abstraction layer for a database

2007-06-12

2007-06-12

Chace, Christian P. (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

10626273

ABSTRACT:
An abstraction layer (50) is provided for facilitating accessing a database (10) containing database records each including a plurality of fields stored in one or more tables (12, 14). The abstraction layer (50) includes a control table (52) containing control records corresponding to database fields. Each control record contains metadata associated with the corresponding database field. The abstraction layer (50) also includes at least one additional table (54, 56, 58, 60, 62, 64, 66, 70, 72, 74, 80) containing additional metadata. Each database field is selectively associated with one or more selected portions of the additional metadata through metadata contained in the control record corresponding to the database field. A user database application (30) accesses the database (10) using metadata obtained from the abstraction layer (50).

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