A Web Application Server Replication Scheme for Complex Transaction Patterns

2008 ◽  
Vol 19 (2) ◽  
pp. 432-445
Author(s):  
Lin ZUO
Author(s):  
Dirk Baldwin ◽  
Suresh Chalasani

Many businesses obtain feedback by surveying customers and business partners. Increasingly, these surveys are conducted via the Web. This chapter reviews briefly literature regarding Web-based surveys and describes a software architecture for a Web-based survey system. The architecture for the survey system is based on three-tiers comprised of a Web server, Web application server, and database server. The Web application server hosts the application modules that display and process the surveys. The application software consists of packages for establishing connections to the database and for reading static and dynamic data from the database. The processed surveys are written to the database with the survey responses. This system allows for anonymous survey responses and maintains user confidentiality. At the University of Wisconsin-Parkside, we have implemented this Web-based survey system, and used it to conduct three different surveys. This survey system is easily extensible to new surveys, and is used for instructional purposes to teach server-side programming. In this chapter, we discuss the key ideas behind the design and implementation of the extensible survey system, and provide results on its application.


Author(s):  
Georg Peters ◽  
Tobias Lang ◽  
Mike Lie

In this chapter we present results of a project in the field of groupware systems. Munich University of Applied Sciences has set up an initiative called IT-Forum to coordinate IT activities across its 14 different departments. As part of this initiative a groupware system was developed on the basis of the Web application server ZOPE and the database mySQL. The objective of this project was to use the groupware systems operatively as communication platform within the IT-Forum and in project-orientated student courses. Furthermore the development and use of the application has been accompanied by some research work in the field of groupware systems. The main focus of this chapter is to describe this groupware system and report some experience of the use of it.


2001 ◽  
Vol 56-57 ◽  
pp. 1051-1055 ◽  
Author(s):  
A Krämer-Flecken ◽  
W Elmenhorst ◽  
P Hüttemann ◽  
H Lambertz ◽  
B von Studnitz

2006 ◽  
Vol 15 (05) ◽  
pp. 849-854 ◽  
Author(s):  
JUAN JOSÉ GARCÍA ADEVA ◽  
JUAN MANUEL PIKATZA ATXA

Security in web-based systems that handle confidential information can be considered a particularly sensitive subject that requires assuming some responsibilities about security. Achieving a secure web application involves tackling several issues such encryption of traffic and certain database information, strictly restricted access control, etc. In this work we focus on detecting misuse of the web application in order to gain unauthorised access. We introduce an Intrusion Detection component that by applying Text Categorisation is capable of learning the characteristics of both normal and malicious user behaviour from the regular, high-level log entries generated by web application through its application server. Therefore, the detection of misuse in the web application is achieved without the need of explicit programming or modification of the existing web application. We applied our Intrusion Detection component to a real web-based telemedicine system in order to offer some evaluation measurements. This articles offers an overview of the model, our experiences, and observations.


2000 ◽  
Vol 42 (6) ◽  
pp. 550-552 ◽  
Author(s):  
Elmar J. Sinz ◽  
Bernd Knobloch ◽  
Stephan Mantel

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