Create a consistent relational model API #12846
Description
Add a new API that allows to configure and read relational mapping information. Adding this abstraction layer would allow to make the mapping more flexible and the implementation more efficient without additional changes to the consumers.
Some examples of queries that would benefit from this:
- Get all columns for a table
- Get all entity types mapped to a table
- Get all properties mapped to a column
- Get the database object that a navigation/relationship is mapped to
New mapping scenarios that this would be allow:
- Mapping an entity type to more than one table
- Different relational configuration for properties mapped to more than one column
- Different mapping for migrations, query and update pipeline
Tasks:
- Add metadata implementation
- Port migrations
- Port update pipeline
- Port query