Interested to Buy Any Domain ? << Click Here >> for more details...
what is primary key,unique key, foreign key? can u teach me
in simple language?
- 44 Answers
- 187783 Views
- Banking, CMC, CTS, HCL, Infosys, Keggfarms, SkyEss, Sunrise, TCS, Web Synergies, Wipro, I also Faced
- E-Mail Answers
Answer Posted / rahul patil
PRIMARY key is one which uniquely identifies a row in the
table.
It does not has any null value entry.It can be formed by
using one or more fields of the table.If more fields are
used then the key is known as COMPOSITE key
| Is This Answer Correct ? | 6 Yes | 5 No |
Post New Answer View All Answers
Explain natural key?
How do database connections work?
What is the use of graph database?
What is the difference between a stored procedure and a query?
What is database server and how it works?
What does specialization in DBMS mean?
What is difference between server and database?
Explain the various types of normalization.
What is the difference between primary and candidate key?
Explain the field term used in database.
What is a driver in database?
What is the concept of Virtual field?
What is a database example?
HOW PASS PARAMETERS FOLLOWING ORDER RPG-CL-RPG?
Give the syntax of exception handling used in DBMS?
