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Locks:Serialisabilty is just a test whether a given interleaved schedule is ok or has a concurrency related trouble. Though, it does not make sure that the interleaved concurrent transactions do not have any concurrency related trouble. This can be completed by using locks. So let us talk about what the dissimilar types of locks are, and then how locking ensures serialsability of implementing transactions.
What are the objectives of query processing? Ans: The objectives of query processing is to transform a query written in a high level language into a accurate and efficien
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
what is er digram given that example of hospital,bank and library er digram.
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
Question: A DBMS built for Online Transaction Processing (OLTP) is generally regarded as unsuitable for data warehousing. Each system is designed with a different set of requir
What are the General Transformation Rules for Relational operations? Ans: The transformation rules transform one relational algebra expression to AN EQUIVALENT ONE 1. E
Synonyms It allows short names or alternative names for objects. Example : CREATE SYNONYM D30 FOR EMPD30; Now if we give command:
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
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