Interested to Buy Any Domain ? << Click Here >> for more details...
Explain the Difference Between a Primary Key and a Foreign Key.
- 1 Answers
- 1771 Views
- I also Faced
- E-Mail Answers
Each record in a table is uniquely identified by its primary key, which also guarantees data integrity. There can only be one primary key per table, which guarantees that every record is distinct.
Conversely, a foreign key refers to the primary key in the associated table to establish a connection between two tables. By guaranteeing the validity of the link between the tables and the consistency of the data, this relationship aids in preserving referential integrity between them.
| Is This Answer Correct ? | 0 Yes | 0 No |
Define primary and unique key?
What are the types of model?
Explain the difference between dbms and rdbms?
What is the e-r model?
What are the basic elements of Base configuration of an oracle Database ?
Why not phenix, the zelinka/otwinoski libraries, etc?
Explain 5nf?
What do you understand by data independence?
How to stop superserver service on linux using only firebird tools?
Write a query to create a duplicate table with and without data present?
What are the various kinds of interactions catered by dbms?
What is implicit cursor in dbms?
-
Oracle (3259) - SQL Server (4518)
- MS Access (429)
- MySQL (1402)
- Postgre (483)
- Sybase (267)
- DB Architecture (141)
- DB Administration (291)
- DB Development (113)
- SQL PLSQL (3330)
- MongoDB (502)
- IBM Informix (50)
- Neo4j (82)
- InfluxDB (0)
- Apache CouchDB (44)
- Firebird (5)
- Database Management (1411)
- Databases AllOther (288)
