Making database connections are expensive in terms of machine resources. In this article, we will examine how a number of connections can be cached in a pool, and then used for accessing the database.

This article explores the fundamentals of a transaction, in the context of JDBC, Enterprise Java Beans and a database.

This article is the first of a series. In this series, we will discuss all the good things JDBC® 3.0 package has to offer. JDBC API provides a programmatic way of accessing data from Java code. Even though non-relational data can be accessed, the goal of JDBC and the technology revolves around accessing relational data. The JDBC is packaged in the java.sql and javax.sql packages.

In this article, we discuss the different ways in which Java can communicate with a database. We will talk about the traditional different kinds of drivers and also discuss some code to connect to a database in order to run queries.

This article tries to demystify HTTP, "servlet", "web server", "application server", "servlet container" and gives the fundamentals of the Java Servlet API (that comes with the J2EE SDK).

If you write Java Server Pages, this article tries to bring together the pieces you need to know to write 'presentation logic'. This article is about custom tags, how to develop them and how to make maximum use of them. This article is also about tag libraries that come with Struts. What is covered is: what is a tag; what is a 'custom' tag; how you can build one; how they make life easier; and how Struts comes with tag libraries for developers to indulge.