Difference between revisions of "11 One to Many"
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Simon Clive (Talk | contribs) (Created page with "One to Many What makes each piece of equipment with the same name, unique per customer? An item of Equipment is "generic" (eg. Ford falcon) until linked to a customer. Once li...") |
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| − | One to Many | + | '''One to Many''' |
| − | What makes each piece of equipment with the same name, unique per customer? | + | What makes each piece of equipment with the same name, unique per customer? |
| − | An item of Equipment is " | + | An item of '''Equipment''' is '''"Generic"''' Eg. Ford falcon - until linked to a customer. Once linked the specific item can be given a '''Registration''' number or '''Serial''' number to make it '''Unique'''. |
| − | given a | + | |
| − | In this example you may have 20 | + | In this example you may have '''20''' Customers with a Ford Falcon but Ford Falcon would only appear in the '''Equipment List Once'''. It would however appear in the '''Customer Equipment List''' '''20''' times - '''Once''' for each customer. |
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Revision as of 16:57, 19 October 2011
One to Many
What makes each piece of equipment with the same name, unique per customer?
An item of Equipment is "Generic" Eg. Ford falcon - until linked to a customer. Once linked the specific item can be given a Registration number or Serial number to make it Unique.
In this example you may have 20 Customers with a Ford Falcon but Ford Falcon would only appear in the Equipment List Once. It would however appear in the Customer Equipment List 20 times - Once for each customer.
