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Database Management Systems


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#1 tom2000

tom2000

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Posted 08 January 2009 - 10:58 AM

A computer database relies upon software to organize the storage of data. This software is known as a database management system (DBMS). Database management systems are categorized according to the database model that they support. The model tends to determine the query languages that are available to access the database. A great deal of the internal engineering of a DBMS, however, is independent of the data model, and is concerned with managing factors such as performance, concurrency, integrity, and recovery from hardware failures. In these areas there are large differences between products.A Relational Database Management System(RDBMS) implements the features of the relational model outlined above. In this context, Date's "Information Principle" states: "the entire information content of the database is represented in one and only one way.

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Edited by yordan, 08 January 2009 - 02:09 PM.
Quoted the text copied from http://en.wikipedia.org/wiki/Database


#2 yordan

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Posted 08 January 2009 - 02:08 PM

Thanks for the info, Tom.
Nicely said, very efficient, short but precise.
You simply forgot to say that this info is coming from wikipedia, namely from here : http://en.wikipedia.org/wiki/Database

You know, it is not really forbidden in our forum to post text copied from somewhere else.
Simply, honesty as well as politeness ask that you mention your source, and put the copied text between quote tags.
I did the quoting job for you today. Next time I expect you to do it by yourself. :mellow:
Regards
Yordan



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