2. POKOK BAHASAN Pertemuan 10 Matakuliah: Sistem Informasi Manajemen Tahun: 2008

3. Bina Nusantara University 3 Chapter 3 Information Technology For Management 6 th Edition Turban, Leidner, McLean, Wetherbe Lecture Slides by L. Beaubien, Providence College John Wiley & Sons, Inc. Data Management: Data, Databases and Warehousing

4. Bina Nusantara University 4 Learning Objectives Recognize the importance of data, managerial issues, and life cycle Describe sources of data, collection, and quality Describe DMS Describe Data Warehousing and Analytical Processing Describe DBMS (benefits and issues)

5. Bina Nusantara University 5 Introduction of Database File-Based Approach Limitation of File Based Approach Database Approach The Database

6. Bina Nusantara University 6 File-Based Approach File Based System is a collection of application programs that perform services for the end-users as the production of reports. Each program defines and manages its own data

7. Bina Nusantara University 7 Aspects Computerization: –Hardware –Software –Data Information Needed: –Programmer –Users –Database Administrator

8. Bina Nusantara University 8 Database System Component Data: –Shared Data –Integrated Hardware –Data Capacity Software: –Creating File, Insert, Retrieving Data, Deleting Data, Security Control, Integrity Control, Recovery Control

9. Bina Nusantara University 9 File-Based Approach File-Base Approach CompanyNameProductNameCategoryNameQuantityUnitPrice New England Seafood CanneryBoston Crab MeatSeafood1$18.40 New Orleans Cajun DelightsChef Anton's Cajun SeasoningCondiments1$22.00 Formaggi Fortini s.r.l.Gorgonzola TelinoDairy Products1$12.50 Grandma Kelly's HomesteadGrandma's Boysenberry SpreadCondiments1$25.00 Svensk Sjöföda ABGravad laxSeafood1$26.00

10. Bina Nusantara University 10 Limitation of File Based-Approach Separation and isolation of data Duplication of Data Data Dependence Incompatible File Format No Security

11. Bina Nusantara University 11 Database Approach DBMS: A Software system that enables users to define, create, maintain, and control access to the database Facilities: Its allows user to define the database through a Data Definition Language Its allow user to Insert, Update, Retrieve data From The Database through Data Manipulation Language

12. Bina Nusantara University 12 DBMS Its provide controlled access to the database. For Example, it may provide: –A security system which prevents unauthorized users accessing the database –An integrity system which maintains the consistency of stored data –A concurrency control system, which allows shared access of the database –A recovery control system –A User control Catalog

13. Bina Nusantara University 13 The Database Advantages of DBMS: –Control of data Redudancy –Data Consistency –More information from the same amount of data –Sharing of data –Improved Data integrity –Improved Security –Enforcement Standard –Economic of Scale –Balance of Conflicting Requirement –Improved Data Accessibility and responsiveness –Increased Productivity

14. Bina Nusantara University 14 The Database Advantages of DBMS: –Improved maintenance through data independence –Increase concurrency –Improved Backup and recovery Services

15. Bina Nusantara University 15 The Database Disadvantages: –Complexity –Size –Cost of DBMS –Additional Hardware Costs –Cost of Conversion –Performance –Higher Impact of a Failure

16. Bina Nusantara University 16 Review Questions What differences between file-based system and Database ? What is limitation of File-Based system ? What is DBMS ?