Assignments Chapter 1
- Discuss the following terms:
- Data: Contains information and can be anything about anything. You can store it in many ways, one of those ways is a database.
- Field: A certain part of the system.
- Record: File, piece of data.
- File: A place to store data.
- What is data redundancy?
Data Rendundancy is the storage of the same data, but in different places, When something needs to be updated this can cause problems.
- Discuss the diasadvantages if file-based systems.
Integrity problems, security problems, concurrency acces, data redundancy and data isolation.
- Explain the difference between data and information.
Data can be anything in any form, information can’t. For example, a person is also data, but a perso isn’t information.
- Use the table below
- 7
- 5
- Mixed-up files, because some have the same city.
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