e52a6f0149 Conformed Dimension Degenerated Dimension Role-Playing Dimension Junk Dimension . Explain what is a degenerated dimension. This functions may be simple or complex depending of the purpose of the selected aggregation data. What are the basic stages of a data warehouse? . In the star schema we have a centralized fact table and multiple dimensions linked to it. What is aggregation? .
The first stage to build a data warehouse is the initial data introduction, tipically this can be achived by copying some operational database. Pivoting allows the rotation of the cube on its dimensions providing the user a different point of view of the explored data. Dicing on OLAP Cubes consists on choosing an interval of values for some of the dimensions representing in the cube, and selecting the data that corresponds to those intervals. All of them were gathered from job interviews and compiled to this list of the most important and frequent ones. In detail, the fact table contains two different kinds of information. Explain what is partitioning. Describe the star schema. Aggregation is the representation of a set of data, joined by some aggregation function. The growing interest and utilization of these data storage methods brings more people and organizations to work in the area.
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