Record format relationships between physical and logical files

 

When you change, add, or delete fields with the Change Physical File (CHGPF) command, a certain relationship exists between the physical and logical files that share the same record format.

• When you change the length of a field in a physical file, you also change the length of the logical file's field.

• When you add a field to the physical file, the field is also added to the logical file.

• When you delete a field in the physical file, the field is also deleted from the logical file unless there is another dependency in DDS, such as a keyed field or a select/omit statement.

 

Parent topic:

Sharing existing record format descriptions in a database file