You have seen how to create an index at the same time
that you create a data set. You can also create an index on an existing
data set or delete an index from a data set. One way to accomplish
either of these tasks is to rebuild the data set. However, rebuilding
the data set is not the most efficient method for managing indexes.
You can use the DATASETS procedure to manage indexes on an existing data set. This uses fewer resources than rebuilding the data set. You use the MODIFY statement with the INDEX CREATE statement to create indexes on a data set. You use the MODIFY statement with the INDEX DELETE statement to delete indexes from a data set. You can also use the INDEX CREATE statement and the ...