iMobile
Databases
A database is an organized collection of data for one or more purposes, usually in digital form. The data are typically organized to model relevant aspects of reality (for example, the availability of rooms in hotels), in a way that supports processes requiring this information (for example, finding a hotel with vacancies). The term "database" refers both to the way its users view it, and to the logical and physical materialization of its data, content, in files, computer memory, and computer data storage. This definition is very general, and is independent of the technology used.
Database languages are generally specific to one data model. The most widely supported standard database language is SQL, which has been developed for the relational data model and combines the roles of DDL, DML, and a query language.