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Cardinality

Hi,

From F4 help i got the following:

<i><b>Cardinality of a relationship</b>

The cardinality (n : m) describes the foreign key relationship with regard to the number of possible dependent records involved (records of the foreign key table) or referred records (records of the check table).

<b>The right side of the cardinality has the following significance:</b>

• m = 1

For each record of the check table there is exactly one dependent record.

• m = C

For each record of the check table there is at most one dependent record.

• m = N

For each record of the check table there is at least one dependent record.

• m = CN

For each record of the check table there are any number of dependent records.</i>

I am not able to understand the above description. Specially what is dependent records. Can any one make me understand what is cardinality if possible with example.

Thanks in advance.

abhishek

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