Data is stored in the Common Data Service database is defined as entity. Entity corresponds to a database table and each field within an entity represents a column in that table.
Common Data service, metadata(data about data), is a collection of entities. Entity metadata controls the kinds of records you can create and type of actions performed on them. When we create or edit the entities,fields relationships, we are editing this metadata.
Common data service comes with a number of standard entities that support the core business applications.We need to become familiar with the catalog of standard entities.
For minor changes we don’t need to create new custom entities:
- To change the field display name or label we don’t need to create custom entity.
- We cannot delete the standard entities but we can hide them by changing the security role assignment.