The SAP DB database system is capable of executing correct database applications and applications that are written in accordance with one of the following definitions:
The database system is capable of checking new applications to ascertain whether they correspond to one of the above definitions. In particular, this means that no extensions that go beyond the selected definition are regarded as correct. However, support of other SQL modes is restricted with regard to DDL statements.
When you log on to the database system, you can enter one of the above definitions or SQL mode INTERNAL (default value).