type of constraints [message #129] |
Wed, 16 January 2002 19:25 |
diana365
Messages: 4 Registered: January 2002
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Junior Member |
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can anybody tell me some example on relvar constraints,atribut constraints and databse constraints.it seems that i cannot figure out the differences between these constraints.
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Re: type of constraints [message #670495 is a reply to message #670491] |
Mon, 09 July 2018 07:41 |
Bill B
Messages: 1971 Registered: December 2004
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Senior Member |
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sathishkumar.as wrote on Mon, 09 July 2018 06:35Primary key
foreign key
Unique -Domain integrity
Not null- Domain intergrity
Check
Default
Please don't respond to issues that are over 16 years old and have already been answered
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