what is primary key,unique key, foreign key? can u teach me
in simple language?
- 44 Answers
- 174278 Views
- Banking, CMC, CTS, HCL, Infosys, Keggfarms, SkyEss, Sunrise, TCS, Web Synergies, Wipro, I also Faced
- E-Mail Answers
Answer Posted / nizamuddin
primery key is unique not null.
in a table only one primery key
| Is This Answer Correct ? | 29 Yes | 14 No |
Post New Answer View All Answers
What is global database name?
Please post the scenerois for writing the complex sql queries , for my practice.Can be any query if you cannot solve.
Re: Where can i get informatica certification Exam dumps and details? please forward it to emailid:
Does facebook use graph database?
What is the difference between data source and database?
What is a database lookup?
After normalization, what are the conditions which have to keep in mind to de-normalize it?
What are different types of joins used in?
What is dialect in database?
What is a Transformation?
Explain database partitioning.
What is a driver in database?
Which Statement would you use to remove the EMPLOYEE_Id_PK PRIMARY KEY constraint and all depending constraints from the EMPLOYEE table?
Is database a hardware or software?
How do I manually create a database?
