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Introducing to Datamining vs. OLAP - مقدمه و مقایسه ای بر داده کاوی و تحلیل روی خط
users clerk, IT professional knowledge worker
function day to day operations decision support
DB design application-oriented subject-oriented
data current, up-to-date
detailed, flat relational
usage repetitive ad-hoc
index/hash on prim. key
lots of scans
unit of work short, simple transaction complex query
# records accessed tens millions
#users thousands hundreds
DB size 100MB-GB 100GB-TB
metric transaction throughput query throughput, response
Yousef Asgari – DBM
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