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Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
Which is another name for weak entity? Child is another name of weak entity.
Describe the GRANT function and explain, how it associates to security. What kind of privileges may be granted? How are they revoked? Ans: Since more than one user can aacce
Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of databa
The clause in SQL which specifies that the query result should be sorted in ascending or descending order based upon the values of one or much more columns is Ans : Order by
Define reference file
This constraint shows that the key attribute value in each tuple must be unique, i.e., no two tuples have the similar value for the key attribute. This is because the value of the
Explain the systems development life cycle. This is the traditional method to develop, maintain, and replace information systems that contains the project identification and se
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
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