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What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
East Coast Aquarium Relational Database
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Discuss the count function? The COUNT function used returns the number of tuples or values fixed in a query. The count function comprises two types of syntax: (1) COUNT (*)
what is completeness constrent?
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
how to find entities
Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of databa
Strict 2PL :Though, this basic 2PL suffers from the trouble that it can result into loss of isolation / atomic property of transaction as theoretically speaking once a lock is rele
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