A
database management system is a software package with
computer programs that control the creation, maintenance, and use of a
database. It allows organizations to conveniently develop databases for various applications by
database administrators and other specialists. A
database is an integrated collection of data records, files, and other
objects. A DBMS allows different user application programs to concurrently access the same database. DBMSs may use a variety of
database models, such as the
relational model or
object model, to conveniently describe and support applications. It typically supports
query languages, which are in fact high-level programming languages, dedicated database languages that considerably simplify writing database application programs. Database languages also simplify the database organization as well as retrieving and presenting information from it. A DBMS provides facilities for controlling
data access, enforcing
data integrity, managing
concurrency control, and
recovering the database after failures and restoring it from backup files, as well as maintaining database
security.
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