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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

15 20 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Data Dictionary Two main types of data dictionaries: –Integrated –Standalone Main function-Store description of all objects that interact with database

15 21 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Data Dictionary (continued) Possible to manage use and allocation of all organization’s information, regardless of whether it has roots in database data Metadata stored in data dictionary are often basis for monitoring database use and assignment of access rights to database users

15 22 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel CASE Tools

15 23 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel CASE Tools (continued)

15 24 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

15 25 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

15 26 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Developing a Database Administration Strategy (continued)