Computer Science › Section J · Database systems › Topic J.1
Database fundamentals
A modern organisation runs on shared data: one record of each customer, used by everyone who needs it. Database systems make that sharing possible while controlling who may see what.
In this topic
- One fact, many copies
- What makes a database different
- The database management system
- Worked example: following one request
- Schemas and subschemas
- Worked example: two subschemas for the theatre
- Data independence
- Database models
- Distributed databases
- Metadata: data about data
- Common mistakes to avoid
- Key takeaways
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