Contiene: Compiling 4GL source files. Informix-4GL programming. Using SQL. Form building and compiling. Report writing. 4GL function library. Informix-4GL statement syntax. Demonstration database and application. System catalogs. Environment variables. Reserved words. Informix-4GL utility programs. Decimal functions for C. Outer Joins. ASCII character set. Modifying termcap and terminfo. Working with Datetime and Interval data.