A developer maps the abstract entity class Account with concrete entity sub-classes
CreditCardAccount and SavingsAccount using the single table per class hierarchy strategy.
Which two statements are true? (Choose two.)
A.
Instances of CreditCardAccount and SavingsAccountarestoredinthe sametable.
B.
Allcolumns that correspondtofields declared inAccountmust bedefined asnullable in the
database.
C.
The fields declared in Accountare storedin adifferent tablethan the ones declared in
CreditCardAccount and SavingsAccount.
D.
All columns that correspond to fields declared in CreditCardAccount or SavingsAccount must
be defined as nullable in the database.