Question

Concatenation is a. operator​

Answer 1

Answer:

The true operator returns the bool value true to indicate that its operand is definitely true. The false operator returns the bool value true to indicate that its operand is definitely false. The true and false operators are not guaranteed to complement each other. That is, both the true and false operator might return the bool value false for the same operand. If a type defines one of the two operators, it must also define another operator.

Explanation:

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Answer 2

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The concatenation operator manipulates character strings and CLOB data. ... The result of concatenating two character strings is another character string. If both character strings are of datatype CHAR , the result has datatype CHAR and is limited to 2000 characters