why aggregration is one way?give example

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page 103 lecture14

define onte-to-many transformation?

page132 lecture17

diff b/w knowledge drivenDSS and Modal driven DSS?

what is distance function ? what are alternative distance function fot
typorgaphical mistake?

page 162 lecture20

good features of DOLAP that distinguish it from others?

lecture 10 page 66

adverse features of MOLAP?

realtionship b/w data quality and value of particular application?