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Chapter 15

Database Administration

Database Systems: Design, Implementation, and Management,

Sixth Edition, Rob and Coronel

Database Systems: Design, Implementation, & Management, 6 th Edition, Rob & Coronel

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15.5 The Database Environment’s Human Component

• Even the most carefully crafted database system cannot operate without a human component

• Effective data administration requires both technical and managerial skills

• DA (data administrator) is responsible for the consolidation and consistency of both manual and computerized data

• DBA is the focal point for data/user interaction

• Need for diverse mix of skills

Database Systems: Design, Implementation, & Management, 6 th Edition, Rob & Coronel

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Database Systems: Design, Implementation, & Management, 6 th Edition, Rob & Coronel

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Data Administrator

• DA (data administrator) must set data administration goals, defined by

– Data sharability and time availability

– Data consistency and integrity

– Data security and privacy

– Extent and character of data use

Database Systems: Design, Implementation, & Management, 6 th Edition, Rob & Coronel

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Database Systems: Design, Implementation, & Management, 6 th Edition, Rob & Coronel

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Personnel management, interactions with the end-

user community

The use of DB, production, development, and use of

application programs

Database Systems: Design, Implementation, & Management, 6 th Edition, Rob & Coronel

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The DBA’s Managerial Role

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End-User Support

• User requirement gathering

• Conflict and problem resolution

• Finding solutions to information needs

• Ensuring quality and integrity of application and data

• Building end-user confidence

• Managing the training and support of DBMS users

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Policies, Procedures, and Standards

• Policies are general statements of direction or action that communicate and support DBA goals

• Standards describe the minimum requirements of a given DBA activity

• Procedures are written instructions that describe a series of steps to be followed during the performance of a given activity

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Data Security, Privacy, and Integrity

• Authorization management defines procedures to protect and guarantee DB security and integrity

– User access management, view definition, DBMS utility access control, DBMS usage monitoring, etc.

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Data Backup and Recovery

• Disaster management includes are the DBA activities to secure data availability after a physical disaster or a DB integrity failure

• The backup and recovery include at least:

– Periodic data and application backups

– Proper backup identification

– Convenient and safe backup storage

– Physical protection of both hardware and software

– Personal access control to the software of a DB installation

– Insurance coverage for the data in the DB

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The DBA’s Technical Role

• DBMS and utilities evaluation, selection, and installation (p. 729)

• Design and implementation of databases and applications

• Testing and evaluation of databases and applications

• Operation of the DBMS, utilities, and applications

• Training and supporting users

• Maintenance of the DBMS, utilities, and applications

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16.6 Database Administration Tools

• Two main types of data dictionaries:

– Integrated

– Standalone

• Main function of data dictionary: store description of all objects that interact with the database

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Database Administration Tools (continued)

• Data dictionary makes it 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

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Summary• Data management is critical for any

organization

• Data should be treated as corporate asset with monetary value

• DBMS is most commonly used electronic tool for corporate data management

• Impact of the DBMS on the organization’s managerial and cultural framework must be carefully examined

• Data administration function was developed in response to changes in data management fostered by technological advances in computer systems

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Summary (continued)

• Database administrator (DBA) is responsible for corporate database management

• Broader data management activity is handled by data administrator (DA)

• DA is more managerially oriented than the more technically oriented DBA

• Development of data administration strategy is closely related to the company’s mission and objectives

• Implementing the overall company strategy is a crucial process influenced by managerial, technological, and cultural issues