SQL
Background to SQL
SQL is a database language that can be used as an embedded language for applications or as a query language. SQL is based upon relational theory.
SQL originated with the name Structured English Query Language (SEQUEL) but it is now known as Structured Query Language. A DBMS based upon SQL is known as an SQL implementation.
There are differing versions of SQL with differing standards. SQL implementations may support all or part of these various SQL standards:
- SQL:1987
- SQL:1989
- SQL:1992
The SQL used here is SQL Anywhere based upon the standard SQL:1992 (aka SQL2).
Move on to retrieval using simple queries.
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Stuart Banner