A relation (from the relational database model) consists of a set of tuples, which implies that
- a)Relational model supports multi-valued attributes whose values can be represented in sets.
- b)For any two tuples, the values associated with all of their attributes may be the same.
- c)For any two tuples, the value associated with one or more of their attributes must differ.
- d)All tuples in a particular relation may have different attributes.
Correct answer is option 'C'. Can you explain this answer?
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