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
- 186406 Views
- Banking, CMC, CTS, HCL, Infosys, Keggfarms, SkyEss, Sunrise, TCS, Web Synergies, Wipro, I also Faced
- E-Mail Answers
Answer Posted / janu
Primary Key:
A primary key is a field or combination of fields that
uniquely identify a record in a table, so that an individual
record can be located without confusion.
Foreign Key:
A foreign key (sometimes called a referencing key) is a key
used to link two tables together.
| Is This Answer Correct ? | 6 Yes | 7 No |
Post New Answer View All Answers
can any one tell me how i can start database testing mean what should be initial point and how i can write a query for listing page of any item thanks in advance
What do you mean by database?
How many indexes can be created on a table?
5. Explain about relational algebra.
Define stored procedure?
Can a database table exist without a primary key?
i have windows-xp processor with P4 system. whenever I tried to download foxpro for windows 2.6 on windows XP, my operating system failed to install foxpro for windows 2.6.please. how could i download , install & run foxpro for windows 2.6 easily on windows XP ?
A lowest level of security by most RDBMS is
Is hive a database?
First input columns brand, mt, re values are ov, 1,re vg, 2,re wu ,3,re. Second input columns are brand, mt, cx their records are ov,4,vg ,5,cx Wu, 6,cx and third input columns brand, mt, rt values are ov,7,rt vg, 8,rt wu, 9,rt but my output is brand, re, cx,rt values are ov, 1,4,7 vg, 2,5,8 wu, 3,6,9
Explain the field term used in database.
how can you perform lookup range in lookup stage expalin in detail?
How do database connections work?
What is ole db used for?
i applied prompt on country when i run report it shows list of all countries but want it to show only four countries name
