Multiple choice technology databases

Which of the following is the major difference between relational data and XML data?

  1. A. Relational data is self-describing; XML data is not

  2. B. Relational data has inherent ordering; XML data does not

  3. C. Relational data must be tabular; XML data does not have to be tabular

  4. D. Relational data is comprised of entities; XML data is comprised of numbers, characters, and dates
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relational databases strictly store data in a flat tabular format consisting of rows and columns. In contrast, XML data is hierarchical and semi-structured, which does not require a tabular layout. Distractors are incorrect because XML data is self-describing, while relational data is not.

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