MySQL Database Operations

MySQL Database Operations

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. What is the property of InnoDB that enforces foreign key relationships stay intact?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    The storage engine responsible for providing foreign key support is InnoDB. It enforces that the rules guarantee the foreign key relationship stays intact with no mismatching of data.

  1. The storage engine in MySQL that provides foreign key support is ___________.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    In MySQL, there are a list of storage engines to choose from. Each storage engine provides its own set of facilities. The foreign key facilities are provided by the InnoDB storage engine.

  1. What is the kind of delete when deletion of an employee from table also deletes that employee from another table?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    In MySQL, a cascaded delete and update is possible where records can be deleted from multiple tables. These tables are related with the help of foreign keys. Foreign keys make table updates flexible.

  1. The ALL subquery performs operations on _____________.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    The operators ‘ALL’ and ‘ANY’ are used to perform operations on columns. They are used in conjunction with a comparison operator in order to test the result of a column subquery.

  1. The operators that are used when a subquery returns multiple rows to be evaluated in comparison to the outer query are _____________










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    When there is a need to evaluate multiple rows in comparison to the outer query, the ‘IN’ and ‘NOT IN’ operators are used. They are used for testing whether a comparison value is present in a set of values.