You are designing a Mapping. How are target and source tables defined? (Choose the best answer.)
A.
Their definition is imported with a reverse-engineering process directly from databases and other sources,
but you must manually define all keys and constraints existing on the database.
B.
Their definition is imported with a reverse-engineering process directly from databases and other sources.
C.
For every load the definition of the tables used, their columns and constraints must be manually built.
D.
An external engine must be run to describe what metadata is needed for a Mapping.
Explanation:
(https://docs.oracle.com/middleware/1212/odi/ODIDG/create_rev_model.htm#ODIDG234)