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Questions and Answers
Which of the following is a problem with the file-based approach to data management?
Which of the following is a problem with the file-based approach to data management?
- Separation and isolation of data (correct)
- Duplication of data
- Lack of end user services
- Inefficient data retrieval
What is a Database Management System (DBMS)?
What is a Database Management System (DBMS)?
- A collection of application programs
- A tool for creating and designing databases
- A set of rules and procedures for data management
- A system that manages and controls access to data (correct)
What are the major components of the DBMS environment?
What are the major components of the DBMS environment?
- Hardware, software, and data (correct)
- End users, application programs, and data
- Database administrators, programmers, and data analysts
- Operating system, network, and data
Who are the users involved in the DBMS environment?
Who are the users involved in the DBMS environment?
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What are the advantages of using a DBMS?
What are the advantages of using a DBMS?
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Study Notes
Introduction to Databases: Problems with File-Based Approach
- File-based systems are collections of application programs that perform services for end users.
- Each program in a file-based system defines and manages its own data.
- One of the limitations of a file-based approach is the separation and isolation of data.
- Each program in a file-based system maintains its own set of data.
- Users of one program may be unaware of potentially useful data held by other programs.
- Another limitation of a file-based approach is the duplication of data.
- Same data is held by different programs in a file-based system.
- This leads to wasted space and potential data inconsistencies.
- Database concepts are introduced as an alternative to file-based systems.
- A Database Management System (DBMS) is a software system that provides an interface between users and the database.
- The major components of the DBMS environment include the database, DBMS software, hardware, and users.
- There are advantages and disadvantages to using a DBMS instead of a file-based system.
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