Informix Guide to SQL: Reference and Using Triggers

Designed as a companion volume to the INFORMIX Guide to SQL: Tutorial, this comprehensive reference covers the Structured Query Language (SQL) as it is implemented in Informix products. Outlines the structure and contents of the demonstration database (stores5) and explains the 21 Informix system catalog tables that describe that structure; defines the column data types supported by Informix products and explains data type conversion techniques; describes the various environment variables that can or should be set to properly use Informix products; explains error handling, the system descriptor area and the SQL Descriptor Area (sqlda); details the workings of all the SQL statements supported by Informix products — with step-by-step diagrams explaining every clause of each SQL statement; and shows how to create and use stored procedures. A reference to SQL for those who already know how to use computers and who rely on them in their daily work.