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As already described in this chapter, every function within LANSA has associated with it a set of commands.
The commands instruct the IBM i to what actions the user wishes to take when executing the function.
The commands are referred to as Rapid Development & Maintenance Language or "RDML" commands.
When a function is compiled into an executable program the commands are converted in RPG instructions which are then compiled into a program that can be executed on the IBM i.
Every command has 3 major components:
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Whenever RDML commands are displayed they usually have the format described above. For instance a simple "function" (or "program") of RDML commands might look like this:
Label | Command | Additional Parameters |
|---|---|---|
L10 | REQUEST | FIELDS(#ORDERNO #PRODUCT #QUANTITY) |
INSERT | FIELDS(#ORDERNO #PRODUCT #QUANTITY) TO_FILE(ORDERS) |
GOTO | LABEL(L10) |
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What this RDML program does is:
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For a complete list of RDML commands refer to the Technical Reference Guide.
In the Technical Reference Guide you will find details of each RDML command and RDML programming techniques and examples.
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