quartz/content/notes/09-data-modelling-and-normalisation.md

title	tags	sr-due	sr-interval	sr-ease
09-data-modelling-and-normalisation	info201 lecture	2022-06-18	31	250

• redundancy-and-anomalies
• dependencies

wia functional dependecy::when some attribute has exactly one associated other attribute wia transitive dependency:: A→B, B→C Transitive dependency wia partial dependency:: when a subset of the left determines the right wia multivalued dependency::when something has a set of associated values of another attribute

• normalisation

what is normalisation::formal process of eliminanting unnecessary redundancy in relations by splitting relations into smaller chunks