Using logical files to secure data

 

You can use logical files to prevent data in physical files from being read or changed.

You can use a logical file to prevent a field in a physical file from being viewed. This is accomplished by describing a logical file record format that does not include fields you do not want the user to see.

You can also use a logical file to prevent one or more fields from being changed in a physical file by specifying, for those fields you want to protect, an I (input only) in position 38 of the DDS form.

You can use a logical file to secure records in a physical file based on the contents of one or more fields in that record. To secure records based on the contents of a field, use the select and omit keywords when describing the logical file.

 

Parent topic:

Securing database files

 

Related concepts

Describing logical file record formats
Describing field use for logical files
Selecting and omitting records for logical files