# Mapping Cardinality

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### #1 Ramzy-110-111

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# Mapping Cardinality

Posted 27 December 2009 - 01:00 AM

Hello all!
I am difficulty understanding mapping cardinality relationships.
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I know there are three ways to map cardinality relationships:
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one to one
one to many
and many to many
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I understand how to map the one to one relationship but I don't really understand the others.

Could anyone please show me how to map a one to many and a many to many relationship? and please explain each step.

Thank you so much and appreciate any sort of help.

Regards.

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## Replies To: Mapping Cardinality

### #2 June7

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## Re: Mapping Cardinality

Posted 28 December 2009 - 09:37 PM

What do you mean by 'mapping' - creating an SQL statement with JOIN clause? Or setting relationships between tables in Access or some other database project?

Start with this tutorial: http://www.w3schools...ql/sql_join.asp
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