Web pages written with simple web development technologies were either written in code (such as C with CGI, or Java with Servlets) which contained lots of HTML-writing code snippets, or written with numerous code segments embedded in HTML (such as PHP or ASP). This led to problems as increasingly sophisticated Web page designs got harder and harder to 'activate' with data, and become increasingly brittle when dealing with change requests. Complex Web pages development forces to use new technologies that helps in development phases. It is possible to separate business logic from presentation using template engines. It’s not easy to choose a proper template engine system. We classified existing template systems. By this way analysis were accomplished. Using web template system, which supports compilation and caching features combining with MVC element data abstraction, we proposed web applications development model. In this work our proposed model has been applied for the development of students practice jobs - web portal. This portal was realized using PHP technologies which includes Smarty template engine, data abstraction class PEAR::DB and PHP 5.0 programming language. We research our proposed web development model performance characteristics. Performance experiments were done with Smarty template engine and PEAR::DB data abstraction class.

Document server is a web application controllable by way of web browser. It is meant to serve for the management of development documentation. The application is divided to the four basic parts: Requirements, Products, Tests and Test Run. The section Requirements serves for inserting requirements for products. Product is produced on the basis of these needs and registered in part Products. Test setting is created in the part Tests according to requirements from the part Requirements. Particular products are then tested. The part Test Run registers records of these tests. These are parts of the application: management of users, connecting supplements to records, printing and exportation of data to different formats, saving history of records, filtration and sorting of entries, etc. All the data is saved in the database MySQL. The application is written in scripting language PHP. Data is presented by template system Smarty. The output is in language XHTML. Cascading style CSS is used to formatting. This work describes development of the application. First it is dealing with the proposal of the database, connection and structure of particular tables. The function of the programme is explained in detail at the same time, which is essential for the correct proposal of the database. The application is based on the database. The selected structure of files and relations of scripts to library functions are shown. The template system and the interface for access of the programme to the database are explained. The most attention is paid to the description of solving important functions of the application, i.e. listing of records, their pagination, filtration, sorting and operation with them: saving, browsing, copying, confirmation and work with history, category and problems by upkeep of consistent tree and export of data to various formats. It is always outlined the problem, the idea of solving and the description of appropriate scripts. Samples of source code are also included for better understanding of complicated algorithms.