Provided by: Springer Healthcare
Topic: Big Data
Date Added: Jul 2011
OLAP is a popular technology to query scientific and statistical databases, but their success heavily depends on a proper design of the underlying Multi-Dimensional (MD) databases (i.e., based on the fact/dimension paradigm). Relevantly, different approaches to automatically identify facts are nowadays available, but all MD design methods rely on discovering Functional Dependencies (FDs) to identify dimensions. However, an unbound FD search generates a combinatorial explosion and accordingly, these methods produce MD schemas with too many dimensions whose meaning has not been analyzed in advance.