Multiple choice

Which of the following is not specific to a particular database management product?

  1. Object-relational mapping

  2. Conceptual schema

  3. Logical schema

  4. Physical data model

  5. Semantic web
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C Correct answer
Explanation

A logical schema is a data model of a specific problem domain expressed in terms of a particular data management technology.Without being specific to a particular database management product, it is in terms of either relational tables and columns, object-oriented classes, or XML tags. This is as opposed to a conceptual data model, which describes the semantics of an organisation without reference to technology, or a physical data model, which describes the particular physical mechanisms used to capture data in a storage medium.

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