what is Constraint? How many types of constraints in SQL ?
Answer Posted / mudit
Constraint are the rules enforced on data columns on table.
Five type of constraints
Primary key
Unique Key
Foreign Key
Not Null
Check
Is This Answer Correct ? | 338 Yes | 56 No |
Post New Answer View All Answers
why would you call update statistics? : Sql server database administration
How to automatically create a log when an exception is being received into SQL Server?
What happens if null values are involved in boolean operations?
Where do we use trace frag?
Explain transaction server explicit transaction?
What are the types of database schema? : sql server analysis services, ssas
What is join query?
How do I setup a local sql server database?
What is code near application topology?
What is full outer join in sql server joins?
What does it mean to invest in the index?
Explain DBCC?
How to count rows with the count(*) function in ms sql server?
What is difference between equi join and inner join?
Define views.