Perhaps the most popular and most powerful
database formats are DBMS applications based on the Structured Query Language
(SQL). SQL databases usually work over a client/server network architecture,
providing an SQL Server to create, store, and manipulate database files,
tables, fields and records, and an SQL Client interface allowing workstation
users not only to design and work with database files, but also to retrieve
useful and meaningful data that will help them in their everyday work.