What happens when tuple in the relation manager is deleted

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Reference no: EM131057983

SQL allows a foreign-key dependency to refer to the same relation, as in the following example:

Here, employee_name is a key to the table manager, meaning that each employee has at most one manager. The foreign-key clause requires that every manager also be an employee. Explain exactly what happens when a tuple in the relation manager is deleted.

Reference no: EM131057983

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What happens when tuple in the relation manager is deleted : Here, employee_name is a key to the table manager, meaning that each employee has at most one manager. The foreign-key clause requires that every manager also be an employee. Explain exactly what happens when a tuple in the relation manager is del..

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