The maintenance status of a view controls whether data records can also be changed or inserted in the tables contained in the view.
The maintenance status can be defined as follows:
Data can only be read through the view.
Data of the tables contained in the view can be changed, deleted, and inserted through the view.
The following status definitions are also possible for maintenance views :
Existing view entries can be changed. Records cannot be deleted or inserted.
Only entries whose non-time-dependent part of the key is the same as that of existing entries can be inserted.