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Where does view definition stored?
A view definition is permanently stored as part of the database.
Explain the Cartesian product: The Cartesian product operation does not need relations to union-compatible. The meaning of this is that the involved relations may have dissim
Lack of Redundancy We have talked about the problems of repetition of information in a database. Such repetition should be stay away as much as possible. Let us state once again t
Consider the subsequent relation Professor (Pfcode, dept, head, time) It is assumed that (i) A professor can work in much more than one
explain five responsibilities of DBA?
Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
a. Construct a query around any one of the functional divisions you made in 4a such that if executed in the distributed design of 4 would require reconstruction of at least two ho
HOW TO SOLVE THE LP Problems by simplex method?z=x1+-3x2+2x3
What is relationship? Give examples A relationship is an association between several entities. Example: A depositor relationship associates a customer with every account tha
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
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