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Oracle

1Z0-898 · Question #25

1Z0-898 Question #25: Real Exam Question with Answer & Explanation

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Question

A user entity is in a one-to-many relationship with a Book entity. In other words, a developer reach the collection of books that a user instance myUser has by using the path expression- "myuser - books". A developer wants to write a Java Persistence query that returns all users that have only two books. Which two are valid queries that return this information? (Choose two.)

Options

  • ASELECT u FROM User U WHERE SIZE (u.books) = 2
  • BSELECT u FROM User WHERE COUNT (u.books) = 2
  • CSELECT u FROM User u (WHERE COUNT (b) FROM u.books b) = 2
  • DSELECT u FROM user u WHERE (SELECT SIZE (b) FROM u.books b) = 2

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