Which of the following objects can you use in the ABAP layer when using the top-down approach to bring code to data? There are 2 correct answers to this question

Which of the following objects can you use in the ABAP layer when using the top-down approach to bring code to data? There are 2 correct answers to this question
A . Calculation views
B . ABAP managed database procedures
C . Stored procedure
D . Core data services views

Answer: B,D