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Knowledge/A Level/H446/01 Computer systems/Databases

OCR H446/01 Computer systems · 1.3.2

Databases

Revision notes for OCR A Level Computer Science (H446) 1.3.2 Databases.

All A Level topics

Revision notes

a.Relational databases, flat files, keys, entity relationship modelling, normalisation and indexing
b.Methods of capturing, selecting, managing and exchanging data
c.Normalisation to 3NF
d.SQL: interpret and modify
e.Referential integrity
f.Transaction processing, ACID, record locking and redundancy