Question

For every teacher record in a database, there is an attribute called Department. This attribute specifies the department name. At times, the name may contain the numeric department id concatenated with it. However, it can never comprise only of the department id. Department name is optional in a teacher record.
Identify the correct components for the domain of the attribute Department.

Answer 1

domain means the type of data we used. in the place we use department name so the domain is varchar. I think so......
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