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type of constraints [message #129] Wed, 16 January 2002 19:25 Go to next message
diana365
Messages: 4
Registered: January 2002
Junior Member
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.
Re: type of constraints [message #133 is a reply to message #129] Thu, 17 January 2002 00:40 Go to previous messageGo to next message
Satish Shrikhande
Messages: 167
Registered: October 2001
Senior Member
Primary key constraints
Foreign Key constraints
Unique key constraints
Check constraints
NOT NULL constraints
Re: type of constraints [message #670491 is a reply to message #133] Mon, 09 July 2018 05:35 Go to previous messageGo to next message
sathishkumar.as
Messages: 1
Registered: July 2018
Junior Member
Primary key
foreign key
Unique -Domain integrity
Not null- Domain intergrity
Check
Default
Re: type of constraints [message #670493 is a reply to message #670491] Mon, 09 July 2018 06:52 Go to previous messageGo to next message
Michel Cadot
Messages: 67363
Registered: March 2007
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diana365's Profile
Date Registered: Sun, January 06, 2002
Last Message: Thu, 17 January 2002 02:25 type of constraints
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Re: type of constraints [message #670495 is a reply to message #670491] Mon, 09 July 2018 07:41 Go to previous message
Bill B
Messages: 1969
Registered: December 2004
Senior Member
sathishkumar.as wrote on Mon, 09 July 2018 06:35
Primary 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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