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An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not?
If relational schema R (A, B, C) has distinct values of A including NULL values A is not a candidate key.
After going by the database architecture, let us now dwell on an important query: how is the data organised in a database? There are a lot of basic structures that exist in a datab
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explain at least five widly used case tools
4. Describe three ways to handle missing field values
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Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
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