24/03/2010
DataBase Architecture Presentation
Research
- A common businesses requirement is to limit or deny access to certain types of data. Explain why this is necessary. Refer to data access, security and privacy in your answer.
- Describe two ways using a DBMS can limit access to data. How completely does this meet typical business expectations to control data access, security and privacy?
Business information is rarely for the use of one individual alone. Usually, a range of people in an organization would need to have access to each item of information. So, businesses strive to share access among appropriate groups.- Give one outcome for business risk as shared access grows. What effect does introducing a security policy have on this outcome?
- authorized usersGive one outcome for business performance as shared access grows.
- Give one outcome for database management system performance as shared access grows.
- Give one outcome for business risk as shared access grows. What effect does introducing a security policy have on this outcome?
- Define data integrity. Give one common cause of poor data integrity. Explain why this can present problems to businesses.
- Why does integrating flat file data in a database improve data integrity? Explain why this alone cannot guarantee data integrity.
- Provide one business benefit of integrating data in this way.
- Give three features of DBMS that are designed to improve reliable access to data in the event of system problems or failures. State how these lower the risk of data loss.
- State how these features affect the reliability and risk of the business.
Following are the five tasks performed by database administrators that aid in data management in an organization
| Task | Business impact | Strengths & weaknesses of the ways DBMS support these tasks |
| managing database structure | ||
| controlling concurrent processing | ||
| managing processing rights and responsibilities | ||
| developing database security | ||
| providing for database recovery | ||
| managing the DBMS maintaining the data repository |
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