It implements this simple design by locking the entire database file during writing. ![]() SQLite stores the entire database (definitions, tables, indices, and the data itself) as a single cross-platform file on a host machine. The application program uses SQLite's functionality through simple function calls, which reduce latency in database access: function calls within a single process are more efficient than inter-process communication. Instead, the SQLite library is linked in and thus becomes an integral part of the application program. Unlike client–server database management systems, the SQLite engine has no standalone processes with which the application program communicates. SQLite is one of four formats recommended for long-term storage of datasets approved for use by the Library of Congress. In 2011, Hipp announced his plans to add a NoSQL interface to SQLite, as well as announcing UnQL, a functional superset of SQL designed for document-oriented databases. ![]() In June 2004, SQLite 3.0 added internationalization, manifest typing, and other major improvements, partially funded by America Online. In September 2001, SQLite 2.0 replaced gdbm with a custom B-tree implementation, adding transaction capability. In August 2000, version 1.0 of SQLite was released, with storage based on gdbm (GNU Database Manager). Hipp based the syntax and semantics on those of PostgreSQL 6.5. The design goals of SQLite were to allow the program to be operated without installing a database management system or requiring a database administrator. Hipp was designing software used for a damage-control system aboard guided-missile destroyers, which originally used HP-UX with an IBM Informix database back-end. Richard Hipp designed SQLite in the spring of 2000 while working for General Dynamics on contract with the United States Navy.
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