Primary Key

Primary Key vs Unique Key

Primary Key vs Unique Key
A primary key cannot allow null and can only be created once in a table. A unique key allows null and can be created multiple times in a table. The keys play an important part when it comes to storing and...

Most Searched in Pregnancy and Parenting Most Searched in Games and Recreation
Most Searched in Education and References Most Searched in Entertainment and Music
Hoodoo vs Voodoo
Nagar Nigam vs Nagar Palika
Machine vs Equipment
Windows 8 Pro vs Windows 8 Enterprise