You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
The Informix® Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the Informix dialect of the SQL language.
These topics provide an overview about how to use the SQL statements, SPL statements, and syntax segments.
The data definition language (DDL) statements of SQL create, modify, rename, or destroy database objects, and make corresponding changes to rows in the system catalog tables of the database.
This chapter describes the syntax and semantics of SQL statements that are recognized by Informix®.
These topics describe Stored Procedure Language (SPL) statements, which you use to write SPL routines. You can store these routines in the database as user-defined routines (UDRs).
These topics describe the data types and expressions that Informix®supports.
These topics describe syntax segments, which are language elements, such as database object names or optimizer directives, that appear as a subdiagram reference in the syntax diagrams of some SQL or SPL statements.
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.
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.