There are several types of operational databases including centralized databases, which store entire information and application programs at a central location; distributed databases, which have contribution data stored across multiple interconnected computers; and personal databases for individual end user use. Other database types discussed are end user databases organized by business functions, and commercial databases containing external user information maintained by external parties. The document also provides examples of database design steps such as determining tables and relationships.

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