Questions and Answers
What was the main purpose of hiring a data processing specialist mentioned in the text?
To develop a computer-based system to track data and generate reports
What was a significant problem associated with the file system method mentioned in the text?
Lengthy development times
What was a common issue with the computerized files developed as per the text?
Data files containing overlapping data
What did the users tend to do with spreadsheet applications according to the text?
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Why did problems start arising with the file system approach according to the text?
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What was a consequence of the popularity of spreadsheet applications mentioned in the text?
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Why is understanding the evolution of file system data processing relevant to database designers and developers?
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What was a common way to organize data in manual file systems?
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Why did organizations start looking to computer technology for help with manual file systems?
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What problem did business managers face when generating reports from manual file systems?
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How did manual file systems serve their role well as data repositories initially?
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What is the purpose of database technologies in relation to data access limitations?
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Study Notes
Data Processing and File Systems
- A data processing (DP) specialist was hired to create a computer-based system to track data and produce required reports due to the limitations of manual file systems.
- Every discipline develops its own terminology to enable clear communication among practitioners.
Basic File Vocabulary
- Understanding basic file vocabulary is essential to comprehend subsequent discussions in computerized systems.
Problems with File Systems
- File systems had problems, including having many data files with related and overlapping data with no means of controlling or managing the data consistently across all files.
- Each file in the system used its own application program to store, retrieve, and modify data.
- Each file was owned by the individual or department that commissioned its creation, leading to data inconsistencies.
Evolution of File Systems
- The file system method was an improvement over manual systems but had limitations that became evident over time.
- Problems with file systems include lengthy development times and limitations in creating information and ensuring data accuracy.
Manual File Systems
- Manual file systems were paper-and-pencil systems organized to facilitate data use.
- These systems were limited in handling large data collections and complex reporting requirements.
Computerized File Systems
- Computerized file systems were developed to overcome the limitations of manual file systems.
- Generating reports from manual file systems was slow and cumbersome, leading to the adoption of computer technology.
