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What are field symbols and field groups? Have you used component idx of structure clause with field groups?


Field Symbols – They are placeholder or symbolic names for the other fields. They do not physically reserve space for a field, but point to its contents. It can point to any data objects.

Field-symbols <fs>

Field Groups – Field groups does not reserve storage space but contains pointers to existing fields.

An extract dataset consists of a sequence of records. These records may have different structures. All records with the same structure form a record type. You must define each record type of an extract dataset as a field group, using the FIELD-GROUPS statement.

Field-groups <fg>

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