Define the following terms Database Management Systems 10CS54 VTU notes 20 Marks JunJuly 2013June 2016

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Define the following terms: Database Management Systems - 10CS54 VTU notes 20 Marks (Jun/July 2013/June 2016)

i) Data base
ii) Canned transaction: 
iii) Data model: 
iv) Meta data: 
v) Data base designer: 


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i) Data base Ans: A database is a collection of related data, where data means recorded facts. Computerbased repositories for data.It is logically coherent data to which some meaning is attached. 

ii) Canned transaction: Ans: These are the transactions that are carefully programmed and tested in advance. Ex bank teller, check account balances post withdrawals/deposits.
 iii) Data model: Ans: It is a collection of concepts that can be used to describe the concepts/logical structure of a database which provides the necessary means to achieve their abstraction. 
iv) Meta data: Ans: It is the data about data which is stored in system catalog which contains description of the structure of each file the type and the storage format of each file and the various constraints on the data.
 v) Data base designer: Ans: They arte responsible for identifying the data to be stored and for choosing an appropriate way to organize it. They also define views for different categories of users. 


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