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Database Systems Notes App Download | Introduction to SQL e-Book PDF
Database Systems Admission Tests: Practice Test 8 (Chapter 15)
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The command to delete the relation is
We define an SQL relation by using the command
The number of error(s) in the following query is/are:
select avg (salary)
from instructor;
where dept name=Comp. Sci.
The aggregate operations, when an empty collection is applied on the function, return a
The result relation has all attributes from all the relations in the
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