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Which of the following is not a restriction for a table to be a relation?(a) The cells of the table must contain a single value(b) All of the entries in any column must be of the same kind(c) The columns must be ordered(d) No two rows in a table may be identicalI got this question during an interview.The query is from Normalization topic in chapter Planning Oracle Applications of Oracle

Answer» RIGHT answer is (C) The columns must be ordered

The EXPLANATION: To FORMAT the columns differently, assign a UNIQUE alias to each column within the SELECT command itself (do not use the ALIAS clause of the COLUMN command) and enter a COLUMN command for each column’s alias.


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