Is it mandatory to give a cardinality ? If cardinality is not given what will

Is it mandatory to give a cardinality ? If cardinality is
not given what will happen?

Question Posted / vinod3035

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Is it mandatory to give a cardinality ? If cardinality is not given what will happen?..

Cardinalities express the maximum number of instances of an
entity A that can be associated to corresponding instances
in another entity B.

Cardinalities need to be defined while setting up joins in
a universe. If not, we encounter join path problems such
as loops and traps, and joining tables will result in
Cartesian products.

Is This Answer Correct ?

3 Yes

2 No

Is it mandatory to give a cardinality ? If cardinality is not given what will happen?..

Answer / rndp99

yes we have to give cardinality to avoid join path problems
and to avoid cartesian product

Is This Answer Correct ?

2 Yes

1 No

Is it mandatory to give a cardinality ? If cardinality is not given what will happen?..

Answer / manik

If cardinality not set between table in universe we got error while we run report "without cardinality"

Is This Answer Correct ?

0 Yes

0 No

Is it mandatory to give a cardinality ? If cardinality is not given what will happen?..

Answer / guest

Yes. If the cardinalities are not set, we cannot detect
loops.

Is This Answer Correct ?

1 Yes

3 No

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