what is primary key,unique key, foreign key? can u teach me
in simple language?
- 44 Answers
- 174403 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
please tell me the informatica telecom projects interview question? like if they ask about project explanation and the difficulties and the solutions taken to solve the issues for telecom projects,e.g i am workin for a vodafone project handlin postpaid section,pls tell me wat wud be the process if i work in this ? thanks
Which database does facebook use?
How to do Data size testing? Who does this testing (Developer or tester)?
Which is the best graph database?
List various types of log-based recovery in DBMS.
Under which circumstance should you create an index on a table?
Is database a hardware or software?
Explain about ur projets on teradata???
What is the purpose of TNS?
What is odm database?
Why merge statement is used inside the database?
Can you create a database in word?
can i use the commands "modify" and Change in DB2 to alter my column datatype and its name in a table?
What are the advantages of using database?
A design problem was given in which I was supposed to make a design for the data base for a given problem.
