What does a query processor do in semantic checking? - Study24x7
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What does a query processor do in semantic checking?

A

Checks whether all the relations mentioned under the FROM clause in the SQL statement are from the database the user is referenced.

B

Checks all the attribute values and also checks whether they exist in a particular relation that is specified in the query. It checks all the attribute values that are mentioned in the SELECT and WHERE clauses of the SQL statement.

C

Verifies whether the types of attributes are compatible with the values used for the attributes.

D

All of these

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