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Chapter 1

Chapter 1. Introduction to Database Management. Objectives. Introduce Premiere Products, the company that is used as the basis for many of the examples throughout the text Introduce basic database terminology Describe database management systems

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Chapter 1

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  1. Chapter 1 Introduction to Database Management Concepts of Database Management, 4th Edition, Pratt & Adamski

  2. Objectives • Introduce Premiere Products, the company that is used as the basis for many of the examples throughout the text • Introduce basic database terminology • Describe database management systems • Explain the advantages and disadvantages of database processing • Introduce Henry Books, the company that is used in the case that runs throughout the text Concepts of Database Management, 4th Edition, Pratt & Adamski

  3. Premiere Products • Distributor of appliances, housewares, and sporting goods • Uses spreadsheet software to maintain important data • Recent growth has made the spreadsheet approach problematic • Redundancy • Difficulty accessing data • Limited security • Size limitations Concepts of Database Management, 4th Edition, Pratt & Adamski

  4. Premiere Products Required Information • Sales Reps • Sales rep number, last name, first name, address, total commission, commission rate • Customers • Customer number, name, address, current balance, credit limit, customer sales rep • Parts Inventory • Part number, description, number units on hand, item class, warehouse number, unit price Concepts of Database Management, 4th Edition, Pratt & Adamski

  5. Premiere Products Sample Order Figure 1.2 Concepts of Database Management, 4th Edition, Pratt & Adamski

  6. Premiere Products Customer Order • Order • Order number, order date, customer number • Order line • Order number, part number, number units ordered, unit price • Overall order total • Not stored since it can be calculated Concepts of Database Management, 4th Edition, Pratt & Adamski

  7. Database Background • Database • Structure to store information about multiple types of entities, attributes, and relationships • Entity • Person, place, thing, or event • Premiere Products has sales reps, customers, orders, and parts • Attribute • Property of an entity • Customer has name, street, city, et cetera Concepts of Database Management, 4th Edition, Pratt & Adamski

  8. Entities and Attributes Figure 1.3 Concepts of Database Management, 4th Edition, Pratt & Adamski

  9. Database Background (con’t.) • Relationship • Association between entities • Rep is related to many customers • Customer is related to a single rep • Data file • File used to store data • Computer counterpart to ordinary paper file Concepts of Database Management, 4th Edition, Pratt & Adamski

  10. One-to-Many Relationship Figure 1.4 Concepts of Database Management, 4th Edition, Pratt & Adamski

  11. Rep and Customer Tables Figure 1.5 Concepts of Database Management, 4th Edition, Pratt & Adamski

  12. Orders and OrderLine Tables Figure 1.5 (con’t.) Concepts of Database Management, 4th Edition, Pratt & Adamski

  13. Part Table Figure 1.5 (con’t.) Concepts of Database Management, 4th Edition, Pratt & Adamski

  14. Alternative Orders Table Figure 1.6 Concepts of Database Management, 4th Edition, Pratt & Adamski

  15. Database Management Systems • Program(s) through which users interact with database • Popular DBMSs include Access, Oracle, DB2, SQL Server • Premiere Products decides to use Access Concepts of Database Management, 4th Edition, Pratt & Adamski

  16. Using DBMSs in Different Ways Figures 1.7 and 1.8 Concepts of Database Management, 4th Edition, Pratt & Adamski

  17. Building a Database • Database design determines the structure of a database • Design entered into DBMS during Construction • Tables • Forms • Reports • Switchboards Concepts of Database Management, 4th Edition, Pratt & Adamski

  18. Part and Order Forms Figures 1.9 and 1.10 Concepts of Database Management, 4th Edition, Pratt & Adamski

  19. Parts Report Figure 1.11 Concepts of Database Management, 4th Edition, Pratt & Adamski

  20. Switchboards Figure 1.12 Concepts of Database Management, 4th Edition, Pratt & Adamski

  21. Switchboards (con’t.) Figure 1.13 Concepts of Database Management, 4th Edition, Pratt & Adamski

  22. Advantages of Database Processing Figure 1.14 Concepts of Database Management, 4th Edition, Pratt & Adamski

  23. Disadvantages of Database Processing Figure 1.15 Concepts of Database Management, 4th Edition, Pratt & Adamski

  24. Introduction to Henry Books Database Case • Book store chain operated by Ray Henry • Henry decided to use database to gather and store information on: • Branches • Publishers • Authors • Books Concepts of Database Management, 4th Edition, Pratt & Adamski

  25. Sample Branch Data Figure 1.16 Concepts of Database Management, 4th Edition, Pratt & Adamski

  26. Sample Publisher Data Figure 1.16 (con’t.) Concepts of Database Management, 4th Edition, Pratt & Adamski

  27. Sample Author Data Figure 1.17 Concepts of Database Management, 4th Edition, Pratt & Adamski

  28. Sample Book Data Figure 1.18 Concepts of Database Management, 4th Edition, Pratt & Adamski

  29. Wrote Table Relates Authors to Books Figure 1.19 Concepts of Database Management, 4th Edition, Pratt & Adamski

  30. Inventory Table Relates Branches to Books Figure 1.19 (con’t.) Concepts of Database Management, 4th Edition, Pratt & Adamski

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