Home » MYSQL » Mysql Foreign Keys » Question

Mysql Foreign Keys

Easy Questions

MYSQL

MySQL Subquery
MySQL Character Set
MySQL Views
Mysql Basic
Mysql Setup
Mysql Foreign Keys
Mysql Query Optimization
Interacting With MySQL
Server SQL Mode
MySQL Events
MySQL UNION
MySQL Full-Text Search
MySQL Command Line Tool
Mysql Error handling
Mysql Compound Statements
MySQL Stored Procedures
MySQL Stored Functions
MySQL Triggers
MySQL Connectors and APIs
Connection
MySQL Functions
MySQL Operators
MySQL Table Operations
MySQL Internationalization and Localization
MySQL Database Operations
MySQL Access Control and Security
MySQL Type Conversion in Expression Evaluation
MySQL Scheduling and Locking Issues
MySQL ORDER BY
MySQL HAVING
MySQL GROUP BY
MySQL Optimization
Managing MySQL Users
MySQL Programs
Access Control for MySQL Stored Programs and Views
Create Database
Drop Database
Select Database
Data Types
Create Tables
Insert Query
Select Query
Mysql miscellaneous
Where Clause
Update Query
Delete Query
Sorting Results
Using Join
NULL Values
Transactions
Alter Command
Indexes
Database Info
Using Sequences
  1. Which key declares that an index in one table is related to that in another?
    1. cross
    2. primary
    3. secondary
    4. foreign
    5. None of these
Correct Option: D

In MySQL, a foreign key is the one which facilitates index relations across tables. It declares that an index in one table is related to that in another and place constraints.


Your comments will be displayed only after manual approval.