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The object definition language (ODL) is which of the following?

  • A.Used to develop logical schemas
  • B.A data definition language for OODB
  • C.A method to implement a logical schema
  • D.All of the above.

Answer: D

Correct answer: All of the above.

ODL does all three. It is the data definition language of the ODMG model, it is used to write the logical schema, and since it is directly executable by an object database it is also the means by which that schema is implemented - which is what removes the translation step the relational world needs.

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