Friday, September 23, 2016

creating an unique ID number

creating an unique ID number

I am finishing a database that someone else started over a year ago - and I have a primary key that is assigned to student IDs BUT also need to have an unique club member ID added for each person/record.
How do I get a number to automatically add to new records and not be in conflict with the student ID number that is the primary key.  Yet the unique club member ID number must always correspond to the student ID number.

Solutions to the Problem creating an unique ID number

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The student ID number is unique - it replaces using social security numbers.   So the club member ID is a different number than the student ID number but once the club member ID is assigned it needs to always be linked to the same student ID number.  And
yes I wondered why they needed another unique identifier but not for me to question but make it work if possible.
Sorry, but I would go back to "them" and ask them if they want you to design this database or do they want to do it.
I have a few mantras when it comes to designing databases for others.
One of those mantras is: USERS DONOT
DICTATE TABLE DESIGN! People usually assign the task of designing a database to someone based on their knowledge of the process.
So why would they tell you how to do your job? If they already have a unique identifier that is assigned to each student,
there is NO need for any other identifier.
Its superfluous and dangerous.
If they can explain to you why it makes sense to use different numbers, then what you do is have a club membership table with a foreign key of StudentID.

Hope this helps, Scott<> P.S.
Please post a response to let us know whether our answer helped or not.
Microsoft Access MVP 2010 Blog: Author: Microsoft Office Access 2007 VBA Technical Editor for: Special Edition Using Microsoft
Access 2007 and Access 2007 Forms, Reports and Queries

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