Do Primary Key Values Have To Be Unique? Do Alternate Key Values Have

1.	Do Primary Key Values Have To Be Unique? Do Alternate Key Values Have To Be Unique?
Answer» Primary KEY VALUES MUST be UNIQUE; alternate key values NEED not be. Primary key values must be unique; alternate key values need not be.

Do Primary Key Values Have To Be Unique? Do Alternate Key Values Have To Be Unique?

Answer»

Primary KEY VALUES MUST be UNIQUE; alternate key values NEED not be.

Primary key values must be unique; alternate key values need not be.