This whole section applies only to sqlite databases for sqlite version 2 and below.
These cannot be used on sqlite3 databases.
This is an extension for the SQLite Embeddable SQL Database Engine. SQLite is a C library that implements an embeddable SQL database engine. Programs that link with the SQLite library can have SQL database access without running a separate RDBMS process.
SQLite is not a client library used to connect to a big database server. SQLite is the server. The SQLite library reads and writes directly to and from the database files on disk.
For further information see the SQLite Website (» http://sqlite.org/).