Pathmaker Programming Guide

Defining Data for a Pathmaker Project
Preparing for Pathmaker Application Development
2–34 067868 Tandem Computers Incorporated
Using DDL Commands With Pathmaker
The following points are guidelines for using DDL commands from within the
Pathmaker interface:
Using ?DICT! causes the DDL compiler to:
Purge all records and definitions in the dictionary, even if the dictionary is
opened for update by more than one user. Information about Pathmaker
objects (requesters, services, servers, macros, and NonStop SQL tables)
remains even if records and definitions are purged.
Close the dictionary on the project subvolume if the work subvolume is
different from the project subvolume. Then the DDL compiler opens and
purges the contents of the dictionary on the work subvolume. If a DDL
dictionary does not already exist on the work subvolume, the DDL compiler
will create one there.
Using ?DICT project-subvolume-name ! can purge all definitions and records
in the project DDL dictionary.
Caution To be sure you are purging the correct DDL dictionary, always specify a subvolume when you use the
?DICT ! command. The ?DICT ! command takes a long time to execute and cannot be stopped after it is
started.
Pressing the BREAK key has no effect when you enter DDL through the
Pathmaker full screen interface.
Pressing the BREAK key returns you to the TACL prompt when you enter DDL
through PMADL.