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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
What are the several forms of identity? a) Value b) Name c) Built-in
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
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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
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
What is foreign key? Foreign Key - Let there are two relations in tables R and S. Any candidate key of the relation R that is referred in the relation S is known as the forei
lock and types of lock
With the linear commit protocol, sites are connected in a chain, and the subtransaction at the left-hand end of the chain initiates the protocol. Propose a crash recovery protocol
Describe domain constraints. Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The en
WHAT IS MEANT BY E-R MODEL
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