Es difícil imaginar el análisis de datos sin el uso de la tecnología OLAP (On-Line Analytical Processing). Aunque haya opiniones de todos tipos de si OLAP hay que considerar una tecnología o una ideología. De todos modos, OLAP se puede caracterizar como un cubo mul...

On-the-fly data aggregation of "flat" database tables is one of the first tasks faced by information system developers and their users. At the same time it is usually difficult to foresee the user needs in terms of data selection criteria (filters), dimensions in which the data needs to be aggregate...