Defining a list of subschemas and subsystems
In the -SS lines tab, you describe the subschemas that are used by a Logical View, and the subschemas and subsystems of a Table that is used by the Logical View.
Before you begin
Note:
- A subschema is a set of Data Elements that belong to the composition of a Logical View or Table. The use of subschemas provides a partial view of this data. For example, a Logical View represents the American states. You can define a "telephone" subschema that groups the data that is related to the telephone coding (city number and area code).
- A subsystem is a selection of Table items within a Table. Each is a different subset of data. You can define several subsystems in the -SS Lines tab of a Logical View. In the example, you can define two subsystems: a subsystem for the eastern states and another subsystem for the western states.