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Current DBMS Based Activities at NCST, Juhu

Current DBMS Based Activities at NCST, Juhu. Sandhya Desai National Centre for Software Technology Juhu, Mumbai. Objective . Introduce the nature of activities at the centre Share our experience in developing applications Get new ideas and better solutions

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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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