Dbms 2
- 2. Operational Databases End User Databases Centralized Databases Distributed Databases Personal Databases Commercial Databases
- 3. Data relating to operations of an enterprise Organized on functional lines such as marketing, production etc Example - one that is used to take orders and fulfill them. It is based on accounts and transactions
- 5. These databases consist of data developed by individual end - users . Managers at different levels Examples of these are collections of documents in spreadsheets, word processing
- 6. Concentrate at a single place or area. Store entire information and application programs at a central facility Example – MTNL has a centralized Database for registration of applications
- 8. Contribution from common databases stored in multiple computers located in the same physical location, or may be dispersed over a network of interconnected computers.
- 10. Subject specific, user designed databases Meant for personal use say by a dept
- 11. Contain information that external users require but cannot afford to maintain such huge databases Subject Specific Financial & technical information Example - The Spire Project: Commercial Databases
- 12. Determine purpose Determine tables, fields Identify Unique keys Determine Relationships between tables
- 13. Students Social Sec. Num. Name (Last, First) Matriculation Date Departments Dept ID Dept Name Dept Chair Faculty ID Dept Room Dept Office Phone
- 14. Courses Dept ID Course Number Course Name Hours Classes Course Number Section Year semester Faculty ID Blog RoomNum
- 15. Grades Social Sec. Num. Dept ID Course Number Section Year Term Grade