About Structured Query Language - SQL was first implemented in
IBM's System R in the late 1970's. - SQL is the de-facto
standard query language for creating and manipulating data in -
There are some differences, but much of SQL is standard across
MS Access, Oracle, Sybase, MySQL, PostgreSQL. - SQL is either
specified by a command-line tool or is embedded into a general
purpose programming language such as Cobol,"C", Pascal, or
accessible via modules as in Java, PHP and Perl. - In Perl, we
use the DBI interface. "DBI is a database access Application
Programming Interface (API) for the Perl Language. The DBI API
Specification defines a set of functions, variables and
conventions that provide a consistent database interface
independent of the actual database being used." --Tim Bunce, the
architect and author of DBI - SQL is a standardized language
monitored by the American National Standards Institute (ANSI) as
well as by National Institute of - ANSI 1990 - SQL 1 standard -
ANSI 1992 - SQL 2 Standard (sometimes