A Benchmark Comparison of Maintenance Policies in a Data Warehouse Environment

• A data warehouse contains data originating from autonomous sources. Various maintenance policies have been suggested which specify when and how changes to a source should be propagated to the data warehouse. Engström et al.(HS-IDA-TR-00-001) present a cost-based model which makes it possible to compare and select policies based on quality of service as well as system properties. This paper presents a simulation environment for benchmarking maintenance policies. The main aim is to compare benchmark results with predictions from the cost-model. We report results from a set of experiments which all have a close correspondence with the cost-model predictions. The process of developing the simulation environment and conducting experiments has, in addition, given us valuable insights into the maintenance problem, which are reported in the paper.

Ämnesord

NATURVETENSKAP  -- Data- och informationsvetenskap -- Systemvetenskap, informationssystem och informatik (hsv//swe)

NATURAL SCIENCES  -- Computer and Information Sciences -- Information Systems (hsv//eng)

Nyckelord

Computer and systems science

Data- och systemvetenskap

Publikations- och innehållstyp

vet (ämneskategori)

rap (ämneskategori)