Topic 6 of 19
Organisation and structure of data
What the specification covers
Unit 1 (AS)Fundamentals of Computer Science
- Fields, records and file design
- Fixed and variable length records
- Master and transaction files
- Sequential, indexed and direct access
- Backup, generations and archiving
- Validation and verification
Unit 4 (A2)Computer Architecture, Data, Communication and Applications
- Creating and processing files
- Hashing algorithms
- Multi-level indexes
- Overflow and file reorganisation
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