Call Statements
4GL call statements transfer control away from the current frame to any of five levels:
• Another frame
• A 4GL or 3GL procedure that can include embedded query language statements or a database procedure
• Another 4GL application
• An Ingres tool, such as QBF
• The operating system
The 4GL call statements are:
• callframe
• callproc
• call application
• call subsystem
• call system