Just like we have table maintenance (SM30) for each table, similarly if there is a requirement to maintain DATA for one or more tables in a single view, then maintenance view can be created. All the tables in a maintenance view must be linked with foreign key. The join CONDITIONS for maintenance views are always derived from the foreign key AUTOMATICALLY and THUS one cannot directly enter the join conditions as for database views. Unlike Database views, one can modify data from maintenance view.

Thus, a maintenance view allows you to maintain the data of an application object together. 

Just like we have table maintenance (SM30) for each table, similarly if there is a requirement to maintain data for one or more tables in a single view, then maintenance view can be created. All the tables in a maintenance view must be linked with foreign key. The join conditions for maintenance views are always derived from the foreign key automatically and thus one cannot directly enter the join conditions as for database views. Unlike Database views, one can modify data from maintenance view.

Thus, a maintenance view allows you to maintain the data of an application object together.