lecture12_DBA.ppt

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lecture12_DBA.ppt

  1. 1. Chapter 15 Database Administration
  2. 2. Learning Objectives <ul><li>That data are a valuable business asset that requires careful management </li></ul><ul><li>Why and how the database plays a critical role in an organization </li></ul><ul><li>That the introduction of a DBMS has important technological, managerial, and cultural organizational consequences </li></ul>
  3. 3. Learning Objectives <ul><li>What the database administrator’s managerial and technical roles are </li></ul><ul><li>About several database administration tools </li></ul><ul><li>About various database administration strategies </li></ul><ul><li>How various database administration technical tasks are performed with Oracle </li></ul>
  4. 4. Data as a Corporate Asset
  5. 5. The Need for and Role of Databases in an Organization <ul><li>Database’s predominant role is to support managerial decision making at all levels in the organization </li></ul><ul><li>DBMS must provide tools that give each level of management a different view of the data and support required level of decision making </li></ul>
  6. 6. A Summary of DBA Activities
  7. 7. Desired DBA Skills
  8. 8. DBA Activities and Services
  9. 9. Database Administration Tools <ul><li>Two main types of data dictionaries: </li></ul><ul><ul><li>Integrated </li></ul></ul><ul><ul><li>Standalone </li></ul></ul><ul><li>Main function: store description of all objects that interact with the database </li></ul>
  10. 10. Database Administration Tools ( continued ) <ul><li>Possible to manage use and allocation of all organization’s information, regardless of whether it has roots in database data </li></ul><ul><li>Metadata stored in data dictionary are often basis for monitoring database use and assignment of access rights to database users </li></ul>
  11. 11. Developing a Database Administration Strategy <ul><li>Critical step for any organization is to ensure its information system supports strategic plans for each of the company’s business areas </li></ul><ul><li>Database administration strategy must not conflict with information systems plans </li></ul>
  12. 12. Developing a Database Administration Strategy ( continued ) <ul><li>Information engineering </li></ul><ul><ul><li>Translates strategic company goals into the data and applications that will help company achieve those goals </li></ul></ul><ul><ul><li>Output of the IE process is an information systems architecture that serves as basis for planning, development, and control of future information systems </li></ul></ul>
  13. 13. Summary <ul><li>Data management is critical for any organization </li></ul><ul><li>Data should be treated as corporate asset with monetary value </li></ul><ul><li>DBMS is most commonly used electronic tool for corporate data management </li></ul><ul><li>Impact of the DBMS on the organization’s managerial and cultural framework must be carefully examined </li></ul><ul><li>Data administration function was developed in response to changes in data management fostered by technological advances in computer systems </li></ul>
  14. 14. Summary ( continued ) <ul><li>Database administrator (DBA) is responsible for corporate database management </li></ul><ul><li>Broader data management activity is handled by data administrator (DA) </li></ul><ul><li>DA is more managerially oriented than the more technically oriented DBA </li></ul><ul><li>Development of data administration strategy is closely related to the company’s mission and objectives </li></ul><ul><li>Implementing the overall company strategy is a crucial process influenced by managerial, technological, and cultural issues </li></ul>

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