Temporal db - PowerPoint PPT Presentation

AGENDA :

AGENDA :. A few preliminaries Laying the foundations 3. Building on the foundations. OBJECTIVES OF THIS PRESENTATION :. Time dimension is becoming increasingly important —especially in data warehouse context No one has done it right yet! We’re lobbying to get it done right ...

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644 views • 48 slides

BCDM

BCDM. Temporal Domains Time is linear and totally ordered Chronons are the basic time unit Time domains are isomorphic to subsets of the domain of Natural numbers. D VT = {t 1 ,t 2 , …, t k } (valid time) D TT = {t’ 1 ,t’ 2 , …, t’ h }  {UC} (transaction time)

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566 views • 42 slides

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