What is the difference between UNIQUE CONSTRAINT and PRIMARY KEY? 1. There is no difference. 2. A PRIMARY KEY cannot be declared on multiple columns. 3. A UNIQUE CONSTRAINT cannot be declared on multiple columns. 4. A table can have multiple PRIMARY KEYS but only one UNIQUE CONSTRAINT. 5. A table can have multiple UNIQUE CONSTRAINTs but only one PRIMARY KEY.
7 15215Post New Satyam Interview Questions
Is mac built on unix?
hi..i'm searching on cognos.i want to know some real time explanation..persons who have real time exp and who r searching in this field..can u send ur mail-id..my mail-id is dhaanuus@gmail.com..hope u will respond as soon as possible..
What is the hierarchy of data in databases?
In one year how many times tds, service tax, and Mvat is paid?
What is final keyword in java?
What is internationalization testing (i18n testing)?
What is the synonym of form?
What are the parts of ms word screen?
How is lazy loading achieved?
Define retail banking?
What is xml xsl?
If Debentures Are Issued at Par and Redeemable at Par What Journal Entry Should Be Passed?
What is difference between ms office and ms word?
Define multicast routing?
What is a method declaration?