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One can ignore derived attribute, since it can be calculated at any time.
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Convert ER Diagram into Tables - Generalization - Specialization - Aggregation - Transform ER Diagram into Tables
fferent columns. In the diagram above, Student Address is a composite attribute. It has Door#, Street, City, State and Pin. These attributes are merged into STUDENT table as individual columns. <span>One can ignore derived attribute, since it can be calculated at any time. In the STUDENT table, Age can be derived at any point of time by calculating the difference between DateOfBirth and current date. Hence we need not create a column for this attribute. I


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