Datamanagement, Database Management System

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What are costs to be considere when transaction is roll back, What are the ...

What are the costs to be considered when a transaction has to be rolled back when recovering from deadlock?         Ans: A few transaction will must rolled back (made a victim)

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For Colorado customers calculate the number of single products ordered. If a product is purchased on multiple orders, it should be counted only single time. The result should conta

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Explain Dynamic Two-Phase Locking Here a transaction locks a data item instantly earlier than any operation is applied on the data item.  After finishing all the operations on

The internal or physical level in dbms, The Internal or Physical Level ...

The Internal or Physical Level The collection of files permanently stored on secondary storage devices is called as the physical database. The internal or physical level is t

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What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.

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Difference among a database schema and a database state, What is the differ...

What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a

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