Home
SQL programming
You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
Guide to SQL: Tutorial
The Informix® Guide to SQL: Tutorial shows how to use basic and advanced structured query language (SQL) to access and manipulate the data in your databases. It discusses the data manipulation language (DML) statements as well as triggers and stored procedure language (SPL) routines, which DML statements often use.
Database concepts
Structured Query Language
ANSI-compliant databases

SQL programming
You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
- Guide to SQL: Syntax
- Guide to SQL: Reference
  The Informix® Guide to SQL: Reference contains the reference information for the system catalog tables, data types, and environment variables of the HCL Informix dialect of the SQL language, as implemented in HCL Informix. These topics also include information about the stores_demo, sales_demo, and superstore_demo databases that are included with HCL Informix.
- Guide to SQL: Tutorial
  The Informix® Guide to SQL: Tutorial shows how to use basic and advanced structured query language (SQL) to access and manipulate the data in your databases. It discusses the data manipulation language (DML) statements as well as triggers and stored procedure language (SPL) routines, which DML statements often use.

ANSI-compliant databases

Use the MODE ANSI keywords when you create a database to designate it as ANSI compliant. Within such a database, certain characteristics of the ANSI/ISO standard apply. For example, all actions that modify data take place within a transaction automatically, which means that the changes are made in their entirety or not at all. Differences in the behavior of ANSI-compliant databases are noted, where appropriate, in the statement descriptions in the Informix® Guide to SQL: Syntax. For a detailed discussion of ANSI-compliant databases, see the Informix® Database Design and Implementation Guide.