Grouped Data
In a grouped file, a case has several records
that are grouped together in the file. You can use DATA LIST
to define a grouped file if each
case has the same number of records and records appear in the same
order for each case. You can use FILE TYPE
GROUPED
whether the number of records per case and record
order are fixed or vary. However, FILE TYPE
GROUPED
requires that each record have a case identifier
and a record code.