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database (Integration in teaching and learning (Active learning - enhanced…
database
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features
- Fields - Information is entered on a database via fields.Each field holds a separate piece of information, and the fields are collected together into records.
- Automatically look up and find records containing particular information
2.Records - For example, a record about a student might consist of several fields which give their name, address, age and academic result. Records are grouped together into files which hold large amounts of information.
3.Files - Files can easily be updated: you can always change fields, add new records or delete old ones.
- Search on more than one field at a time.
advantages
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Reduced data entry, storage, and retrieval costs
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disadvantages
- Database systems are complex, dificult, and time-consuming to design
- Substantial hardware and software start-up costs
- Damage to database affects virtually all applications programs
- Extensive conversion costs in moving from a file-based system to a database system
- Initial training required for all programmers and users