General information
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Network:
Windows 2003 Server
Hello.
I have users that input these data into a form at the same time:
Machine Start Time End Time
user 1 01 1430 1545
user 2 02 1500 1630
user 3 01 1600 1648
etc.
If by mistake user 2 inputs Machine 01 (it's already working)
How do I prevent that data from being stored using the insert sentence ?
There is no primary key to compare user's input.
Thank you.
c.x.
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