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DB2 Database Administration
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Which of the following is the major difference between relational data and XML data?
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A
C. Relational data must be tabular; XML data does not have to be tabular
💡 Explanation:
Relational data MUST be organized in tabular format with rows and columns, adhering to a predefined schema. XML data is hierarchical and flexible, representing data as nested elements and attributes without requiring tabular structure. XML is actually MORE self-describing than relational data (A is wrong), XML preserves document order (B is wrong), and both can represent similar data types (D is not the major difference).