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Explain the Relational Completeness
Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus except for the restrictions he proposed. Actually the restrictions have no unfavorable effect on the applicability of his relational algebra for database purposes.
List the requirements needed to design a trigger. The requirements are:- Specifying when a trigger is to be implemented. State the actions to be taken when the trigger im
note on hashing technique
Explain in details about the f unctions of DBA ?
Failure Controlling Methods: Failures can be handled using different recovery methods that are talk about later in the unit. But the first question is doing we really require recov
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
What are ways of finding out either an update is required or not for derived attributes? The ways to find out an update is required or, not are as: Explicit update
how to implement hyrise in C plus plus
Explain sorted File with advantages? Sorted file The sort utility shall perform one of the subsequent functions: 1.Sort lines of all the named files together and write the
WHAT IS DATABASE TECHNOLOGIES
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