Managing Aging Data Using Persistent Views (Extended Abstract)
Janne Skyt, Christian S. Jensen · 2000
. Enabled by the continued advances in storage technologies, the amounts of on-line data grow at a rapidly increasing pace. For example, this development is witnessed in the so-called data webhouses that accumulate data derived from clickstreams. The presence of very large and continuously growing amounts of data introduces new challenges, one of them being the need for eectively managing aging data that is perhaps inaccurate, partly outdated, and of reduced interest. This paper describes a new mechanism, persistent views, that aids in exibly reducing the volume of data, e.g., by enabling the replacement of such \\lowinterest, " detailed data with aggregated data; and it outlines a strategy for implementing persistent views. 1 Introduction The developments in data storage technologies continue to obey Moore's Law and thus advance at a rapidly increasing pace. As a consequence, in his recent Turing Award lecture, Jim Gray predicted that there will be sold more disk storage ...