A JDBC tutorial is an excellent way to learn the basics of this robust programming language. This article covers the Java JDBC API, Type IV driver, PreparedStatement, and Spring Transaction Management. The source code is available on GitHub. In addition, the tutorial includes examples and code that you can use to test out the various features of the library.
Java JDBC API
The Java JDBC API is an API that allows you to communicate with a database using Java. You can use the API to retrieve and modify data stored in the database, which can be very useful if you need to retrieve information from a database regularly. In this tutorial, you’ll learn the basics of the JDBC API and select data from the database.
The JDBC API works with any relational database and provides a standard interface. It can be used in a two-tier or three-tier application and has the advantage of being platform-independent.
Type IV driver
If you use a JDBC Type IV driver, you must know some fundamental properties. One of these properties is maxPoolSize, which sets the maximum number of physical connections that can be used simultaneously. This includes both free links and ones that are in use. If this property is exceeded, the Type 4 driver will throw an SQLException and send a message saying, “Maximum pool size reached.”
The second parameter, the character set, corresponds to the column’s character set. For example, the following method invocation sets column one of stmt to the String “abcd.”
PreparedStatement
A PreparedStatement is a subinterface of Statement and contains a pre-compiled SQL query. It is a more convenient way to make a query than a traditional SQL statement. The pre-compilation of a PreparedStatement also prevents SQL injection. A PreparedStatement can be supplied with several parameters that make it easier to customize the query.
You can use a PreparedStatement instead of the standard Statement interface in a parameterized query. It improves performance because the question is compiled once instead of many times. The PreparedStatement interface includes methods for inserting, updating, and deleting data.
The JDBC driver can cache the PreparedStatement object. This allows for reusing a prepared SQL statement across several Java applications. This makes query execution faster and more secure.
Spring Transaction Management
Spring Transaction Management is the name given to the method that Spring uses to manage database connections. It is similar to the CMT used by EJB. This method is used when you need to change a data source and want the changes to persist for some time. It is often used to deal with SQL errors and business logic errors.
I’ll discuss Spring transaction management and other Spring libraries in this tutorial. You will find that the basics of JDBC are the same so you can apply them across all these libraries. Understanding how these libraries work will be important when creating complex enterprise applications. I want to acknowledge Andreas Eisele and Ben Horsfield for their comments on an early version of this guide.
ODBC bridge
The ODBC bridge is one of the critical components of a JDBC program. It allows you to connect to any ODBC data source from Java applications. It can also be used to develop custom Java solutions and BI & analytics tools. The CData JDBC-ODBC bridge is fully compatible with Java development environments and ODBC databases.
The JDBC-ODBC bridge supports many features from the JDBC 2.0 standard, including batch updates and scrollable cursors. It also includes most components needed for a J2EE-compatible JDBC driver, such as sample implementations of DataSource and ConnectionPoolDataSource classes. It also offers additional robustness and reliability checks.
