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A. Keys may be unique or have multiple occurrences in the database.
B. It cannot use SQL.
C. Queries are possible on individual or groups of tables.
D. Tables are linked by common data known as keys.
E. Data are organized in a series of two-dimensional tables each of which contains records for one entity.
B. It cannot use SQL.
C. Queries are possible on individual or groups of tables.
D. Tables are linked by common data known as keys.
E. Data are organized in a series of two-dimensional tables each of which contains records for one entity.
Ans: D
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