Which SQL operation is used to update the structure of an existing database table?
A). ALTER
B). UPDATE
C). MODIFY
D). CHANGE
Which PHP function is used to execute an SQL query in MySQLi extension?
A). mysqli_query()
B). mysqli_fetch()
C). mysqli_insert()
D). mysqli_update()
What is the primary purpose of the mysqli_query() function in PHP?
A). Establishing a database connection
B). Inserting records into the database
C). Updating records in the database
D). Executing SQL queries
Which operation is used to delete specific records from a database table using SQL?
A). DELETE
B). REMOVE
C). ERASE
D). CLEAR
Which statement is used to create a new database table in SQL?
A). CREATE
B). INSERT
C). UPDATE
D). DELETE
What is the primary purpose of the PDO::beginTransaction() method in PHP PDO extension?
A). Fetching data from the database
B). Inserting records into the database
C). Initiating a transaction
D). Closing the database connection
Which PHP function is used to execute an SQL query in PDO extension?
A). pdo_query()
B). pdo_execute()
C). pdo_fetch()
D). pdo_insert()
What is the primary advantage of using prepared statements in PHP for database operations?
A). Better performance
B). Improved security against SQL injection
C). Easier syntax
D). Compatibility with older PHP versions
What is the purpose of the PDO::commit() method in PHP PDO extension?
A). Fetching data from the database
B). Inserting records into the database
C). Closing the database connection
D). Committing a transaction
What is the purpose of the PDO::exec() method in PHP PDO extension?
A). Executing SQL queries
B). Fetching data from the database
C). Inserting records into the database
D). Closing the database connection