Q
What is the purpose of the PDO::beginTransaction() method in PDO extension?

Answer & Solution

Answer: Option A
Solution:
The PDO::beginTransaction() method in PDO extension is used to initiate a database transaction. Transactions help maintain data integrity by ensuring that a series of SQL statements are executed as a single unit, either all succeeding or all failing.
Related Questions on Average

What is the primary advantage of using prepared statements in MySQLi and PDO?

A). Improved security and protection against SQL injection

B). Faster execution of SQL queries

C). Simpler syntax for SQL statements

D). Compatibility with older PHP versions

Which of the following methods is used to execute a prepared statement with parameters in MySQLi extension?

A). mysqli_prepare()

B). mysqli_query()

C). mysqli_bind_param()

D). mysqli_execute()

Which of the following statements is true regarding database connections in PHP applications?

A). Database connections should be properly closed after use

B). Database connections are automatically closed by PHP

C). Keeping database connections open improves performance

D). Multiple simultaneous database connections are recommended

What is the primary purpose of database connection pooling in PHP applications?

A). Improving scalability and performance

B). Enhancing database security

C). Simplifying database configuration

D). Reducing server resource usage

What does PDO stand for in the context of PHP database access?

A). PHP Database Objects

B). PHP Data Operations

C). PHP Data Objects

D). PHP Database Extensions

Which of the following is NOT a step in connecting to a MySQL database using PDO extension?

A). Create a PDO object

B). Set database credentials

C). Execute an SQL query

D). Handle connection errors

What is the purpose of the PDO::lastInsertId() method in PDO extension?

A). Retrieving the ID generated by the last INSERT statement

B). Executing an SQL query

C). Fetching data from the database

D). Closing the database connection

Which PHP extension provides an improved interface for interacting with MySQL databases?

A). MySQL

B). PDO

C). SQLI

D). MySQLi

Which of the following is NOT a valid database driver supported by PDO extension?

A). MySQL

B). PostgreSQL

C). MongoDB

D). SQLite

Which PHP extension offers a consistent interface for accessing different database engines, including MySQL, PostgreSQL, and SQLite?

A). MySQL

B). PDO

C). SQLI

D). MySQLi