what is Constraint? How many types of constraints in SQL ?
- 38 Answers
- 84051 Views
- HCL, IBM, NIIT, Wipro, I also Faced
- E-Mail Answers
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
How to check what was the last restore transaction LSN in Log shipping or Mirroring? when we don't have a Monitor or witness server.
Explain about system stored procedure?
How do I find the default sql server instance?
How to use wildcard characters in like operations in ms sql server?
What objects does the fn_my_permissions function reports on? : sql server security
How much is a sql server license?
What do you mean by collation recursive stored procedure?
Define constraints and give an example of their use?
What is a field name?
What is indexing a document?
Explain what are magic tables in sql server?
What is normalization and what are the advantages of it?
How to compose an inquiry to demonstrate the points of interest of an understudy from students table whose name begins with k?
Explain temporary table vs table variable by using cursor alternative?
What is xdr?
