A database system is essentially a sophisticated, computerized record keeping system, a repository for a collection of computerized data files. A database system maintains information and makes that information available on demand, for this purpose a database system provides set of facilities to perform such operations. For example, adding new empty files in database, inserting new data in existing files, retrieve data, update data, delete data, query the database etc. Thus we can say that a database system stores data and provides information related to data. Although some people use "data" and "information" synonymously, but some prefer to distinguish between two. Data refers to the values actually stored in the database and information refers to the meaning of those values as understood by user.
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