what is a data warehouse and why would you want one? emily morton-owens @bradamant
TRANSCRIPT
What is a data warehouseand why would you want one?
Emily Morton-Owens@bradamant
Data warehouseNot for usersNot operational or transactionalAbstract/summaryNormalizedFor analysis and strategy
ETL: Extract, transform, loadCorrect granularityEnsure privacyEnforce consistencyExamples:
◦Holds data store◦Checkout summary◦Chat logs
Operations data e.g.
ILS
ETL MAGIC
Data warehou
se
Bridge silosILS + demographics
◦How much do Millennials use the library in comparison to their population in Seattle?
EZproxy + academic department + publications◦How much do faculty access articles through
the library by department? How does that correspond to the department’s publishing output?
Events+ e-materials◦Do people who check out e-materials come to
events as much as people who check out print materials?
ChallengesData problems that are unrelatedMetrics that no one cares aboutForce people to agree on
methods
WinsSave timeLet people do their own reportingMore accurateShared strategy