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 Education and References Most Searched in Society and Culture
Most Searched in Cars and Transportation Most Searched in Entertainment and Music
Advice vs Suggestion
Bipolar vs Depression
Marketing vs Selling