Can we have more than one NULL in a column having unique
constraint?
Answer Posted / drona
UNIQUE constraints can accept NULL just once.
I have a dought?
Every null is different?
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what is create database syntax? : Sql server database administration
What is stored procedures?
Do you know what is raid and what are different types of raid configurations? : SQL Server Architecture
Explain primary key?
if no size is defined while creating the database, what size will the database have? : Sql server administration
Explain external key management in sql server 2008
What is acid db?
Explain DBCC?
What is 5nf in normalization form?
Explain query editor regions
What do you understand by the analysis services in sql server?
What is use of attribute hierarchy ordered ? : sql server analysis services, ssas
What is the difference between NOROW and LOCKROW?
How do you set a trace flag in sql server?
Explain what are the database objects? : SQL Server Architecture