Databases Reference
In-Depth Information
Summary
Now you really are ready to go real-time with your cubes! To let you in on one
of the arcane secrets of "real-time" anything — there is no such thing as real-
time in computing, unless you plan to violate the cosmic speed limit (about
186,000 miles per second). There are varying degrees of latency, however, the
shortest of which appear instantaneous to the user. Your job as an architect of
Business Intelligence solutions is to design your application in such a way as
to satisfy the needs of your users. That often means application of these tech-
niques with particular attention paid to keeping the production system online
and available during specified hours.
In this chapter you read about three real-world scenarios with one or more re-
commended solutions for each. These scenarios addressed solutions to long,
average, and no latency requirements. A key take-away here is that you
should remain calm in the face of massive amounts of source data; there are
ways to contend with it. If you get it right, your users will remain blissfully ignor-
ant of the challenges you faced in keeping up the illusion of real-time data
presentation. Indeed, your business decision makers using the system won't
know (or care) how the system is implemented, they'll know, "…it just works
and has amazingly up-to-date data." That is where you want to be.
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