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Questions and Answers
What does a database consist of, according to the text?
What does a database consist of, according to the text?
Which component of the database system interacts with other hardware and software aspects of the computer system?
Which component of the database system interacts with other hardware and software aspects of the computer system?
What is the software that creates, maintains, and operates the database called in a database system?
What is the software that creates, maintains, and operates the database called in a database system?
In a database system, what does the DBMS facilitate related to data?
In a database system, what does the DBMS facilitate related to data?
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When using a database system, what role might an auditor need to consider if special IT skills are required?
When using a database system, what role might an auditor need to consider if special IT skills are required?
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How do individual users typically perceive data stored in a database?
How do individual users typically perceive data stored in a database?
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What is the main function of the DBMS in a database system?
What is the main function of the DBMS in a database system?
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How does a database system support data availability to application programs?
How does a database system support data availability to application programs?
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What would be a suitable inquiry for an audit team working with a complex database system?
What would be a suitable inquiry for an audit team working with a complex database system?
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Why would each user in a database system not necessarily be aware of all the data stored?
Why would each user in a database system not necessarily be aware of all the data stored?
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Study Notes
Database Systems
- Database systems are typically supplied by commercial vendors and need to be adapted to the entity's needs.
- Guidance on database systems applies to multiple user environments, excluding single-user PC environments.
Database System Characteristics
- Two important characteristics of database systems: data sharing and data independence.
- These characteristics require the use of a data dictionary and data resource management.
Data Sharing
- A database is composed of data with defined relationships, organized to permit multiple users to use the data in different application programs.
- Individual applications share data in the database for different purposes.
Data Independence
- The DBMS records data once for use by various application programs, creating a need for data sharing and data independence.
- Data independence is achieved when the structure of data in the database can be changed without affecting application programs, and vice versa.
- DBMSs differ in the degree of data independence they provide.
Data Dictionary
- A data dictionary is a software facility within the DBMS that keeps track of the location of data in the database.
- It provides functions such as creating/modifying data definitions, validating data definitions, preventing unauthorized access, and interrogation/reporting facilities.
Database Structure
- Databases can be structured as flat file databases or relational databases.
Database Concept
- A database is a collection of shared data used by multiple users for different purposes.
- Individual users may not be aware of all the data stored in the database or its multiple uses.
Audit and IT Skills
- When an entity uses a database system, the technology is likely to be complex and may require special IT skills for audit inquiries.
- The auditor may need to consider using the work of an expert.
Database Systems Components
- Database systems consist of two components: the database and the database management system (DBMS).
- The DBMS software creates, maintains, and operates the database, and interacts with other hardware and software aspects of the overall computer system.
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Description
Explore the characteristics of database systems such as data sharing and data independence. Learn about the importance of adapting DBMS software to meet specific entity needs. This quiz covers guidelines for database systems used in multi-user environments.
