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15 1 Chapter 15 Database Administration Database Systems: Design, Implementation, and Management, Seventh Edition, Rob and Coronel.

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Presentation on theme: "15 1 Chapter 15 Database Administration Database Systems: Design, Implementation, and Management, Seventh Edition, Rob and Coronel."— Presentation transcript:

1 15 1 Chapter 15 Database Administration Database Systems: Design, Implementation, and Management, Seventh Edition, Rob and Coronel

2 15 2 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel In this chapter, you will learn: That data are a valuable business asset that require careful management and how databases play a critical role in an organization That the introduction of a DBMS has important technological, managerial, and cultural organizational consequences

3 15 3 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel In this chapter, you will learn (continued): What the database administrator’s managerial and technical roles are About several database administration tools and strategies How various database administration technical tasks are performed with Oracle

4 15 4 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Data as a Corporate Asset Data are a valuable asset that require careful management Data are a valuable resource that can translate into information If the information is accurate and timely, it is likely to trigger actions that enhance company’s competitive position and generate wealth

5 15 5 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Data as a Corporate Asset (continued)

6 15 6 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Need for and Role of Databases in an Organization Database’s predominant role is to support managerial decision making at all levels in the organization DBMS must provide tools that give each level of management different view of data and support required level of decision making

7 15 7 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Introduction of a Database: Special Considerations Having computerized database management system does not guarantee that data will be properly used to provide best solutions required by managers Introduction of a DBMS is likely to have a profound impact, which might be positive or negative, depending on how it is administered

8 15 8 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Introduction of a Database: Special Considerations (continued) Introduction of DBMS has three important aspects: –Technological-DBMS software and hardware –Managerial-Administrative functions –Cultural-Corporate resistance to change

9 15 9 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Evolution of the Database Administration Function Data administration has its roots in the old, decentralized world of the file system Advent of DBMS and its shared view of data produced new level of data management sophistication and led DP department to evolve into information systems (IS) department Data management became increasingly complex job, thus leading to development of database administration function

10 15 10 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Evolution of the Database Administration Function (continued)

11 15 11 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Evolution of the Database Administration Function (continued)

12 15 12 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Evolution of the Database Administration Function (continued)

13 15 13 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Evolution of the Database Administration Function (continued)

14 15 14 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Database Environment’s Human Component Even most carefully crafted database system cannot operate without human component Effective data administration requires both technical and managerial skills DA must set data administration goals DBA is focal point for data/user interaction Need for diverse mix of skills

15 15 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Database Environment’s Human Component (continued)

16 15 16 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Database Environment’s Human Component (continued)

17 15 17 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Database Environment’s Human Component (continued)

18 15 18 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The DBA’s Managerial Role

19 15 19 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The DBA’s Technical Role Rooted in following areas of operation: –Evaluating, selecting, and installing DBMS and related utilities – Designing and implementing databases and applications – Testing and evaluating databases and applications – Operating DBMS, utilities, and applications – Training and supporting users – Maintaining DBMS, utilities, and applications

20 15 20 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Developing a Data Administration Strategy Critical step for any organization is to ensure its information system supports strategic plans for each of the company’s business areas Database administration strategy must not conflict with information systems plans

21 15 21 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Developing a Database Administration Strategy (continued) Information engineering –Translates strategic company’s strategic goals into data and applications that will help company achieve those goals –Output of IE process is information systems architecture that serves as basis for planning, development, and control of future information systems

22 15 22 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Developing a Database Administration Strategy (continued)

23 15 23 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The DBA at Work: Using Oracle for Database Administration Execution of tasks tends to be DBMS-and operating-system specific This section is brief introduction to way some typical DBA tasks would be performed in Oracle

24 15 24 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Oracle Database Administration Tools

25 15 25 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Creating Tablespaces and Datafiles

26 15 26 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Managing the Database Objects: Tables, Views, Triggers, and Procedures

27 15 27 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Managing Users and Establishing Security

28 15 28 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary Data management is critical activity for any organization Data should be treated as corporate asset DBMS is most commonly used electronic tool for corporate data management Impact of DBMS on organization’s managerial and cultural framework must be carefully examined

29 15 29 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary (continued) Development of data administration function is based on evolution from departmental data processing to more centralized electronic data processing (EDP) department to more formal “data as a corporate asset” information systems (IS) department Database administrator (DBA) is responsible for managing corporate database Broader data management activity is handled by data administrator (DA)

30 15 30 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary (continued) DA is more managerially oriented than more technically oriented DBA Managerial services of DBA function include: –Supporting end-user community –Defining and enforcing policies, procedures, and standards for database function –Ensuring data security, privacy, and integrity –Providing data backup and recovery services –Monitoring distribution and use of data in database

31 15 31 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary (continued) Technical role requires DBA to be involved in at least: –Evaluating, selecting, and installing DBMS –Designing and implementing databases and applications –Testing and evaluating databases and applications –Operating DBMS, utilities, and applications –Training and supporting users –Maintaining DBMS, utilities, and applications

32 15 32 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary (continued) Development of data administration strategy is closely related to company’s mission and objectives To help translate strategic plans into operational plans, DBA has access to an arsenal of database administration tools –Tools include data dictionary and computer-aided software engineering (CASE) tools Some database administration functions are performed using Oracle RDBMS –Several tasks are performed by a typical Oracle DBA using Oracle database administrator tools


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