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Current DBMS Based Activities at NCST, Juhu

Explore the projects, interests, system configurations, and issues faced in DBMS and application development activities at NCST. Learn about ongoing projects, research interests, system profiles, and design issues.

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Current DBMS Based Activities at NCST, Juhu

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  1. Current DBMS Based Activities at NCST, Juhu Sandhya Desai National Centre for Software Technology Juhu, Mumbai

  2. Objective • Introduce the nature of activities at the centre • Share our experience in developing applications • Get new ideas and better solutions • Possibilities for future Collaborations sandhya@saathi.ncst.ernet.in

  3. Urjaswala Vora Gauri Rendalkar Lakshana Pant Amarish Choubal Vishal Mehrotra Satish Rane Sudhin Deshpande Sandhya Desai Salim Sayyed Amit Vaidya Present group members at NCST, Juhu sandhya@saathi.ncst.ernet.in

  4. Projects Under progress • Computerization of Mumbai University Exam centre. • MTNL Directory Service. • TIFR Payroll. • Supporting NCST office functions. • Advanced PGDST DBMS module • Database design review for TEC sandhya@saathi.ncst.ernet.in

  5. Research Interests • Data Warehousing • System Architecture • Internet and databases • Workflow systems sandhya@saathi.ncst.ernet.in

  6. MTNL- Web dictionary Service • Started as prototype for Mumbai node • Dictionary services • Delivered operational system • at Both Delhi and Mumbai • URL: mumbaihelp1.mtnl.net.in • URL: delhihelp1.mtnl.net.in sandhya@saathi.ncst.ernet.in

  7. System Configuration • Oracle 8 on Unix server • Java application server on Windows NT • Web browsers on clients sandhya@saathi.ncst.ernet.in

  8. Application Server • Coded in Java • Manages pool of connections to Oracle • Uses threads to serve each request • parses client requests and formulates equivalent SQL query • Formats result set creating dynamic HTML pages sandhya@saathi.ncst.ernet.in

  9. Issues • Performance • security • Usage log • 50hits/min, 20,000 hits on first day • extensions to the dictionary service sandhya@saathi.ncst.ernet.in

  10. Mumbai University project • SRS document • proposed duration one year • team of 6 members sandhya@saathi.ncst.ernet.in

  11. System Profile • Complex requirements of exam centre • around 1,50,000 students every year • around 600 exams with time varying structure, revised exams • around 15,000 examiners • around 10,000 papers and, revised papers • around 150 colleges • around 150 degrees, diplomas, certificates sandhya@saathi.ncst.ernet.in

  12. Customer Profile • Distributed • No centralized authority • Not very demanding • Not too committed to project • Overloaded with operations sandhya@saathi.ncst.ernet.in

  13. System Configuration • SQLserver • Powerbuilder for client software • Power Designer • Windows NT server sandhya@saathi.ncst.ernet.in

  14. Design Issues • Analysis of exam patterns • Complexities in exam schemas • Difficult to get complete domain knowledge • Work flow understanding • Tracking the actions • Reengineering sandhya@saathi.ncst.ernet.in

  15. What we learnt? • Trivial things are not at all trivial • report formats • identifiers • data entry forms and formats • collation of data • verifying the data • checking consistency of data sandhya@saathi.ncst.ernet.in

  16. At Cross Roads • Software engineering • Quality Assurance • Project management sandhya@saathi.ncst.ernet.in

  17. Retrospection • Transaction processing and performance • Selection of Software • selection of hardware platforms and networking • Bottlenecks in the system sandhya@saathi.ncst.ernet.in

  18. Success of the System • User involvement • User feedback • User training • Constant support after implementation • Extensions to the system sandhya@saathi.ncst.ernet.in

  19. What is lacking? • Documentation • Vigorous testing and inspection • Process engineering • Serious analysis of applications and improvement in the data design • Online help feature • Security issues sandhya@saathi.ncst.ernet.in

  20. Summary • Limitations of NCST kind of organization in handling and maintaining application software • Project management- one time vs often done activity • Process engineering • team spirit sandhya@saathi.ncst.ernet.in

  21. Client infrastructure • Proper support • staff • resources • work culture • Able to make the system operational • Staff should bale to cope up with new technology • Long term planning sandhya@saathi.ncst.ernet.in

  22. Issues. • Web for accessing the application • 3 layer architecture • Security with Web technology • performance after fully operational • Component technology sandhya@saathi.ncst.ernet.in

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