Which design pattern is used in Java JDBC connectivity?

JDBC database access is based around the Factory pattern. With JDBC, javax. sql. DataSource is the Factory object and java.

What is connection object in JDBC?

The main objects of the JDBC API include: A DataSource object is used to establish connections. Although the Driver Manager can also be used to establish a connection, connecting through a DataSource object is the preferred method. A Connection object controls the connection to the database.

What is JDBC connection with example?

jdbc. Driver. Connection URL: The connection URL for the mysql database is jdbc:mysql://localhost:3306/sonoo where jdbc is the API, mysql is the database, localhost is the server name on which mysql is running, we may also use IP address, 3306 is the port number and sonoo is the database name.

How do I know if my JDBC connection is successful?

Testing JDBC Connections

1. Start DataDirect Test as a Java application or applet.
2. From the DataDirect Test Welcome window, click the Press Here To Continue button.
3. Select Driver / Register Driver.
4. In the Please Supply a Driver URL field, make sure that the following driver is specified; then, click OK.

Which of the following is correct about connection interface of JDBC?

Q 7 – Which of the following is correct about driver interface of JDBC? A – JDBC driver is an interface enabling a Java application to interact with a database. B – The JDBC driver gives out the connection to the database and implements the protocol for transferring the query and result between client and database.

Which of the following is correct about JDBC?

Q 12 – Which of the following is correct about JDBC? A – The JDBC API provides the abstraction and the JDBC drivers provide the implementation. B – New drivers can be plugged-in to the JDBC API without changing the client code. C – Both of the above.

What are the steps involved in establishing a JDBC connection?

Fundamental Steps in JDBC

• Import JDBC packages.
• Load and register the JDBC driver.
• Open a connection to the database.
• Create a statement object to perform a query.
• Execute the statement object and return a query resultset.
• Process the resultset.
• Close the resultset and statement objects.
• Close the connection.

What is JDBC and ODBC connection?

ODBC is an SQL-based Application Programming Interface (API) created by Microsoft that is used by Windows software applications to access databases via SQL. JDBC is an SQL-based API created by Sun Microsystems to enable Java applications to use SQL for database access.

How do I know if my JDBC connection is alive?

isValid(int timeoutSeconds) : Returns true if the connection has not been closed and is still valid. The driver shall submit a query on the connection or use some other mechanism that positively verifies the connection is still valid when this method is called.

Which of the following is advantage of using JDBC connection pool?

Which of the following is advantage of using JDBC connection pool? Explanation: Since the JDBC connection takes time to establish. Creating connection at the application start-up and reusing at the time of requirement, helps performance of the application.

Which of the following method can be used to create a connection object?

Connection: The Connection object is created by using getConnection() method of DriverManager class. DriverManager is the factory for connection.

What is a JDBC connection?

Before establishing a connection between front end i.e your Java Program and back end i.e the database we should learn what precisely a JDBC is and why it came to existence. What is JDBC? JDBC is an acronym for Java Database Connectivity.

How do I create a connection to a database in Java?

Create Connection Object − Finally, code a call to the DriverManager object’s getConnection ( ) method to establish actual database connection. The Import statements tell the Java compiler where to find the classes you reference in your code and are placed at the very beginning of your source code.

How to interact with the Connected database?

Once the connection has established, we can interact with the connected Database. First, we need to create the statement to perform the SQL query and then execute the statement. Now we will create the statement object that runs the query with the connected database. We use the createStatement method of the Connection class to create the query.

How to make the same connection made by the previous examples?

To make the same connection made by the previous examples, use the following code − At the end of your JDBC program, it is required explicitly to close all the connections to the database to end each database session. However, if you forget, Java’s garbage collector will close the connection when it cleans up stale objects.