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In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
prototype of a distributed information system for a national car part retail outlet chain.
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
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What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
Differentiate strict two phase locking protocol and rigorous two phase locking protocol. In strict two phase locking protocol all exclusive mode locks taken by a transaction is
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
Creating views with Replace option : This option is used to alter the definition of the view without recreating and dropping it or regranting object privileges previously granted o
Explain the Dynamic Hashing Techniques There are two methods in it: extendible hashing - stores an access structure in addition to the file, and therefore is somewhat identica
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