Programming Guide : Using 3GL in Your Application
 
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Using 3GL in Your Application
 
Overview
How You Can Call 3GL Procedures
How You Can Use Exec 4GL Statements in 3GL Procedures
How You Can Use Exec SQL Statements in 3GL Procedures
How You Can Preprocess Exec 4GL and Exec SQL Statements
How You Can Link 3GL Procedures
Technical Tips
Sample 3GL Procedures
Overview
Most of your application development needs can be met by coding in OpenROAD 4GL. However, there are occasions when you want to make procedure calls to 3GL or embedded SQL. The most common such occasions include:
• Improving performance of numerical calculations
• Using existing 3GL code
Note:  All the code examples described in this chapter assume that you are using an Ingres DBMS.