M1 Schema

The M1 schema contains the metadata in a erwin DM model.

The various classes of objects and properties in a erwin DM model form the definitions of tables and columns exposed using the ODBC interface. To find the class names used in erwin DM's metamodel, see the document erwin Metamodel Reference. All spaces and periods in class names are replaced with underscores. The ODBC interface capitalizes the names, but the driver is not case-sensitive. For example, the Object_Type class becomes the OBJECT_TYPE table and the Long_Id property becomes the LONG_ID column.

Several of the table descriptions below indicate the base columns exposed. These represent the fundamental columns of the table that will be present across various releases of erwin DM. These tables will also expose columns showing tag values for the item being described. A tag is a characteristic of an item such as "does it show up in the Explorer?" (TAG_IS_EXPLORER_SUPPRESSED). Tags can change from release to release of erwin DM as the needs of the product change. You should consult the erwin Metamodel Reference document for a description of the tags for a given release.