Q
Which of the following SQL operations is used to update existing data in a database table?

Answer & Solution

Answer: Option C
Solution:
The UPDATE operation in SQL is used to modify existing data in a database table. It changes the values of specified columns in existing rows based on specified conditions.
Related Questions on Average

What is the primary purpose of the PDO::query() method in PHP PDO extension?

A). Establishing a database connection

B). Executing an SQL query

C). Fetching data from the database

D). Closing the database connection

What is the primary function of the mysqli_fetch_array() function in PHP?

A). Establishing a database connection

B). Executing SQL queries

C). Fetching data from the database

D). Closing the database connection

Which of the following PHP functions is used to execute an SQL query in MySQLi extension?

A). mysqli_execute()

B). mysqli_query()

C). mysqli_fetch()

D). mysqli_prepare()

Which PHP extension is commonly used for executing SQL queries and interacting with databases?

A). MySQL

B). PDO

C). SQLI

D). PHPDB

What is the purpose of the mysqli_fetch_assoc() function in PHP?

A). Establishing a database connection

B). Executing SQL queries

C). Fetching data from the database

D). Closing the database connection

Which of the following PHP functions is used to execute an SQL query in PDO extension?

A). pdo_execute()

B). pdo_query()

C). pdo_fetch()

D). pdo_prepare()

What is the purpose of the mysqli_fetch_object() function in PHP?

A). Establishing a database connection

B). Executing SQL queries

C). Fetching data from the database

D). Closing the database connection

Which PHP extension provides procedural and object-oriented approaches for executing SQL queries and interacting with MySQL databases?

A). PDO

B). MySQL

C). SQLI

D). MySQLi

What is the primary purpose of the PDO::exec() method in PHP PDO extension?

A). Establishing a database connection

B). Executing an SQL query

C). Fetching data from the database

D). Closing the database connection

Which of the following SQL operations is used to remove all data from a database table?

A). INSERT

B). SELECT

C). TRUNCATE

D). DELETE