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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.
Problem: (a) Data mining is one of the best ways to analyse data and using software techniques, hidden and unexpected patterns and relationships in sets of data can be extrac
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
Define Two phase commit Two phase commit: To make sure atomicity, all the sites where a transaction is being executed must agree on the final outcome of the execution. The tran
What is Data dictionary? A data dictionary is a reserved space in a database that is employed to store information about the database itself. A data dictionary may consist o
What are the typical phases of query processing
What are the function of DBA?
Explain data abstraction? Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is
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