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Explain retrieval in QBE?
Retrieval in QBE : A "GUI" for expressing queries.
But has influenced many projects Especially PC Databases: Paradox, Access, etc.
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
What is called a query evaluation plan? A sequence of primitive operations that can be used to assess a query is a query evaluation plan or a query implementation plan.
A database is to be constructed to remain track of the teams and games of a sport league. A team has a number of players, not all of whom participate in every game. It is desired
Concurrency issues Data integrity: Threads accessing same object need to be synchronized, such as: banking account. Deadlock: One or more threads in system are perman
Define Assertions in SQL a. An assertion is a predicate that is expressing a condition we wish the database to always satisfy. b. Domain constraints, functional dependency
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
how to data store?
what is check point in database management system
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