All topics

List of articles in category All topics
Title
The value of data and the purpose of files in data processing
How files are organised
Fixed and variable length records
Transaction and master files and serial and sequential files
Index sequential files and multi-level indexes
Typical operations on files
A simple introduction to hashing algorithms
Hash tables in more detail
Dealing with collisions
Multi-level indexes
Overflow and file reorganisation
Network security and potential threats
Security, privacy and integrity of data, including back-ups, generations and transaction files
Disk mirroring strategies and failover
Hotspots
Hotspots - Answers
Virus protection software
Virus protection software - Answers
Backing up v archiving data