About 40% of the data types can be used to define the data either stored in tables or in working storage data definitions (that is, in a Global or Local data definition within an object). Two data types, BLOB and TableFilter, can only be used to define table stored data, but not working storage data. About 60% of the data types can only be used for working storage data definitions.

The following list shows which data types can be used for table (persisted) data fields and which ones can be used for working storage (variable) data: