Oracle
1Z0-860 · Question #93
1Z0-860 Question #93: Real Exam Question with Answer & Explanation
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Question
A developer maps the abstract entity class Account with concrete entity sub-classes Credit Card Account and Savings Account using the single table per class hierarchy strategy. Which two statements are true? (Choose two.)
Options
- AInstances of Credit Card Account and Savings Account are stored in the same table.
- BAll columns that correspond to fields declared in Account must be defined as nullable in the database.
- CThe fields declared in Account are stored in a different table than the ones declared in Credit Card
- DAll columns that correspond to fields declared in Credit Card Account or Savings Account must be
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