What method is used to execute a stored procedure using a CallableStatement?
- callProcedure()
- execute()
- executeProcedure()
- executeQuery()
The execute() method is used to execute a stored procedure using a CallableStatement.
How can you retrieve the output of a stored procedure using CallableStatement?
- getOutput()
- getOutputParameterValue()
- getProcedureOutput()
- getResultSet()
You can retrieve the output of a stored procedure using getOutputParameterValue() method in CallableStatement, which returns the value of a designated OUT parameter after the stored procedure execution.
What is the impact on performance when using PreparedStatement for repeated database operations?
- Decreased performance due to compilation
- Improved security with parameterized queries
- Increased performance due to query caching
- No impact on performance
Using PreparedStatement can lead to increased performance as the query is precompiled and cached, reducing database load and improving execution speed.
How do you handle transaction management when using PreparedStatement and CallableStatement?
- Explicitly commit transactions using commit()
- Rollback transactions using rollback()
- Transactions are automatically managed
- Use Connection.setAutoCommit(false)
To handle transactions with PreparedStatement and CallableStatement, set auto-commit to false using Connection.setAutoCommit(false) and then explicitly commit or rollback transactions using commit() and rollback() methods, respectively.
To set a date in a PreparedStatement, the method _________ is used.
- setDate()
- setDateValue()
- setTime()
- setTimestamp()
The setDate() method is used to set a date in a PreparedStatement when working with JDBC.
When using a CallableStatement, the method _________ is used to register an OUT parameter.
- outParameter()
- registerOutParameter()
- registerOutput()
- setOutParameter()
When using a CallableStatement in JDBC, the registerOutParameter() method is used to register an OUT parameter.
Which SQL statement is used to start a transaction in a database?
- BEGIN TRANSACTION
- COMMIT TRANSACTION
- ROLLBACK TRANSACTION
- START TRANSACTION
The START TRANSACTION statement is used to begin a transaction in a database, marking the starting point for a series of SQL statements to be treated as a single unit.
In what scenarios is CallableStatement preferable over PreparedStatement?
- Executing SQL queries with input parameters
- Handling batch updates
- Handling stored procedure calls
- Optimizing read-only operations
CallableStatement is preferable when dealing with stored procedures as it allows the execution of precompiled SQL queries, making it suitable for scenarios where stored procedures are used.
A PreparedStatement can be optimized by the JDBC driver using __________.
- batch processing
- caching
- connection pooling
- query optimization
A PreparedStatement can be optimized by the JDBC driver using connection pooling, which involves reusing database connections to improve performance.
In a CallableStatement, the method _________ is used to execute a SQL function.
- execute()
- executeFunction()
- executeQuery()
- executeUpdate()
In a CallableStatement, the method executeFunction() is used to execute a SQL function.