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Answer Posted / paramjeet
A relationship which can be defined between tables and must
be explicitly defined at field level. Foreign keys are used
to ensure the consistency of data. Data entered should be
checked against existing data to ensure that there are now
contradiction. While defining foreign key relationship
cardinality has to be specified. Cardinality mentions how
many dependent records or how referenced records are possible.
| Is This Answer Correct ? | 2 Yes | 0 No |
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