1. CIT 343 Concord Wednesday, August 11, 2004

2. Introduction blumberg.7@osu.edu http://home.comcast.net/~johnblumberg To get student files go to www.course.com select Computer Science ISBN 061921323X get files and PPTs and such. www.course.com I will be using Access 2000/2003

3. CIT 343 20% Homework Problems 30% Design Project 20% Midterm Quiz 20% Final 10% Class Participation

4. CIT 343 Database Systems"Design, Implementation, & Management,, Rob and Coronel, Sixth Edition, Course Technology, ISBN 061921323X. With care Database Systems"Design, Implementation, & Management,, Rob and Coronel, Fifth Edition, Course Technology, ISBN 061906269X

5. Information is Power A resource Is expensive Is vital Is most important

6. Information is Power Data is a raw statistic Information is processed data Information is used to make decisions Information is used to manage

7. Database A technology An organized cohesive collection of related objects defined within itself.

8. Database Bits Bytes Fields Records Files Databases Warehouses

9. Database can be Centralized Single user on a PC Multi user on a LAN or WAN Terminal to Host Client - Server

10. Database can be Distributed File Servers Client Servers Horizontal Vertical

11. Data System Approaches Lore - people dependent Manual - paper dependent Computerized –Redundant with no sharing –Inconsistent with no standards –Inflexible with custom programming

12. Data System Approaches Database –Minimal redundancy –Integrated data –Shared data –Less programming –More security –Easy data access –Data independence

13. Database Management System A DBMS is A software entity that provides The database technology

14. Database Management System Costs –Personnel –Backup –Conflicts –Turf

15. Database Models Do It Yourself

16. Open window (A) and fly kite (B). String (C) lifts small door (D) allowing moths (E) to escape and eat red flannel shirt (F). As weight of shirt becomes less, shoe (G) steps on switch (H) which heats electric iron (I) and burns hole in pants (J). Smoke (K) enters hole in tree (L), smoking out opossum (M) which jumps into basket (N), pulling rope (O) and lifting cage (P), allowing woodpecker (Q) to chew wood from pencil (R), exposing lead. Emergency knife (S) is always handy in case opossum or the woodpecker gets sick and can't work.

17. Database Models Do It Yourself Hierarchical

19. Database Models Do It Yourself Hierarchical Networked

21. Database Models Do It Yourself Hierarchical Networked Relations –E. F. Codd & Chris Date, 1970

23. The Object Model Object Data Management Group The Standard for Storing Objects