1. Computer Based Adaptive Testing
Deepak Avanna
Sharath Madathil
Pradeep Tallogu

2. Talk Organization Introduction Architecture Technologies
Database Design
Cool Features
Demo

3. Introduction Basic Idea Time based test
Comparison of performance with other test takers

4. Technologies J2EE – Sun reference server XML Java script Servlets
JavaMail

5. Architecture Servlets EJBs Browser Web Services Container Database
Client Tier
Database

6. Why EJB ? Three Tier architecture Easy maintenance of code
Database abstraction
Security
Inherent transaction support
EJB caches data for web applications very well and can be ten times faster than ordinary database access.
Java – platform independence

7. Scalability
Inherent support for clustering
12 KB page content

8. Why Servlets ? Portability Reliability Simplicity Power
Portability – Servlets are just as portable as any Java application
Reliability – Servlets generally won’t crash the web server because they run inside of a Java Virtual Machine
Power – All standard Java APIs are available: JDBC, RMI, JavaMail etc

9. Why XML ? Extensibility – New tags can be added Data is organized
Easy to interpret
Output to different formats

10. Why Oracle ? Time tested robust technology
Scalable – supports distributed databases
Excellent support

11. Database
Table Structure…. ID
Question C1 C2 C3 C4
ANS
Number
Varchar

12. Cool Features Time based test
Graph showing individual performance – real time
Ability to view other test takers performance graphs – real time
Test Results sent via

13. Points Calculation f( time taken, question difficulty)
Timetaken weightage * question difficulty
10 - minute test
Question difficulty – 2 and 3
Maximum points allowable – 180

14. Timetaken weightage 1 - 3 seconds – 6 3 - 5 seconds – 5

15. Status Written Servlets Graph Generation
Database created and populated
EJBs implemented

16. Tasks Remaining Session Bean Implementation Integration
WAP enabling (if time permits)

17. Demo

18. Problems Faced EJB XSL JavaScript debugging
Learning curve – deployment tool
Oracle connectivity
java.forums.com
XSL
JavaScript debugging