Q
Which of the following statements is true regarding SQL SELECT operation?

Answer & Solution

Answer: Option D
Solution:
The SQL SELECT operation is used to retrieve data from a database table. It returns a result set containing rows that match the specified conditions or criteria.
Related Questions on Average

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

What is the primary advantage of using prepared statements in PHP for executing SQL queries?

A). Better performance

B). Improved security against SQL injection

C). Easier syntax

D). Compatibility with older PHP versions

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 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

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

A). Establishing a database connection

B). Executing SQL queries

C). Fetching data from the database

D). Closing the database connection

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

A). Establishing a database connection

B). Executing SQL queries

C). Fetching data from the database

D). Getting the number of rows in a result set

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

A). INSERT

B). SELECT

C). UPDATE

D). DELETE

What is the primary function of the mysqli_query() 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 statements is true regarding SQL DELETE operation?

A). It removes all data from a table

B). It updates existing records in a table

C). It adds new records to a table

D). It removes specific records from a table