Internal tables in the user's schema store information that supports workflows and data mining activities.
The internal tables perform the following:
The Data Mining engine creates tables with the DM$ prefix in the database. These tables store information about mining models.
Oracle Data Miner creates tables with the ODMR$ prefix. These tables store information about workflows.
When you use SQL Developer schema navigator to view the objects owned by an Oracle Data Miner user, the internal tables and views are included in the display. You can create a filter in SQL Developer to hide the internal tables and views. When you use Oracle Data Miner interfaces to view users' schemas, the internal tables and views are automatically filtered out.
Parent topic: About User Objects and Repository Objects