Which of the following is NOT a true statement regarding a relation?
A) Each relation consists of a set of named columns and an arbitrary number of unnamed rows.
B) Each column in a relation corresponds to an attribute of that relation.
C) An entry at the intersection of each row and column has a single value.
D) The columns may not be interchanged or stored any sequence.
E) The rows may be interchanged or stored in any sequence.
D
Explanation: D) Because the relational model is based on relational algebra, the order of the columns does not matter. For instance, 4*5 is the same as 5*4.
CL
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