Academic journal article Issues in Informing Science & Information Technology

The Impact of Web-Based Middleware Systems on Training and Assessment through In-House Develop System

Academic journal article Issues in Informing Science & Information Technology

The Impact of Web-Based Middleware Systems on Training and Assessment through In-House Develop System

Article excerpt

Introduction

The society today is in an era where valuable information spread all over the world can easily be obtained at the click of a button. The advent of the Internet and the World Wide Web has made this goal realistic. Valuable information can be stored on a server and a web page can be written to point to this information. Interested users can use their browsers to connect to and browse this page, which is transferred and executed or displayed on the users' (or clients') computer. Clicking on the hypertext representing the desired application system on this page, connects to the system using the URL (Uniform Resource Locator) for the database or system. The introduction to your paper goes in this section. Users can then download this information to their disk. The web pages are written using Hyper Text Markup Language (HTML). Recent technologies involve integrating web pages with programming languages such as Java, leading to effective web-based applications. These new developments are permeating into educational systems. It therefore becomes imperative to examine the impact of such technologies in improving the quality of training and assessment.

This research was necessitated due to perceived lack of enthusiasm on the part of TNG students to maximize the use of Internet as a source of diverse wealth of information. Also, there is the need to maximize lecturing time and reduce paper costs by making lectures, assignments and tests available on the web.

Literature Review

The interdisciplinary nature of this research requires both background and in depth knowledge of specific areas related to the problem being investigated.

Traditional Modes of Training and Assessment

From times immemorial, the traditional modes of training and assessment include oral, written (paper-based) and recently the computer-based off-line written forms. The major limitations of these systems include the need for contact between the trainer/assessor and trainee/assessee, lack of time flexibility, and the cost of storage of training and assessment materials.

Web-based Modes of Training and Assessment

Web-based modes of training and assessment seem to be striving to eliminate the limitations of traditional modes of training and assessment. Designing such web-based applications requires the knowledge of programming languages such as Java (Java servlets and JavaServer Pages), Visual Basic (Active Server Pages using VBScript), Personal Home Page (PHP) as well as knowledge of the HyperText Markup Language (HTML). This study involves the implementation using the HTML in conjuction with Java.

Application Models

The two application models commonly used are the two-tier and the three-tier application models:

In the two-tier model, a Java applet or application talks directly to the database or flat file. This is referred to as a client/server configuration, with the user's machine as the client, and the machine housing the database / file as the server. This approach has the benefit of moving front-end processing off the server (Taylor, 1997).

The three-tiered Java Applications is the server interface approach. In the three-tier model, commands are sent to a "middle tier" of services, which then send SQL statements to the database. The database processes the SQL statements and sends the results back to the middle tier, which then sends them to the user.

This study uses the client-server model and examines how to construct a communication path between the web browser in a client, web server, servlets written in Java and the database through JDBC or a flat text file. The study ends with the implementation of the school assignment system whereby students can connect on-line for the collection, answering and submission of assignments through the World Wide Web.

[FIGURE 1 OMITTED]

Various programming and scripting languages can be used to implement the model above. …

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