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Explain controlled redundancy?
Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
definition and its work
Transactions And Concurrency Management Introduction One of the main benefits of storing data in an integrated repository or a database is to permit sharing of it betwee
What is the use of rename operation? Rename operation is used to rename both relations and an attributes. It uses the as clause, taking the form: Old-name as new-name.
give me a diagram about physical or internal level
How does the system cope up with a record crash when recovery is going on after the first crash? Ans: In a system the undo and redo operations are needed to be idempotent to c
While sorting field groups we cannot use more than one key field False.
sir, could anybody help me in getting complete information about the mentioned topic
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
Question: a) What is Client/Server and what benefits can be expected from Client/Server systems? b) Explain what middleware is and what it does. Why would MIS managers be p
What are composite attributes? Composite attributes can be separated in to sub parts.
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