TAILIEUCHUNG - Oracle Essbase 9 Implementation Guide- P26

Oracle Essbase 9 Implementation Guide- P26:Essbase is a multidimensional database management system. The name Essbase stands for Extended Spread Sheet dataBASE. Using the custom add-in provides the end-user with near seamless compatibility in the Microsoft Excel spreadsheet program. | Building the Essbase Outline Attribute dimensions are always dynamically calculated which means they do not store the data. This is always a benefit as they do not affect the size or performance of the database. Attribute dimensions must always be associated with a standard dimension. Earlier we briefly saw the differences between standard dimensions and attribute dimensions. Sometimes your data has attributes that make it desirable to perform further analysis on it. In the case of the Esscar Motor Company it may be desirable to track a certain vehicle model by its color. You may wish to compare how that model sells in markets based on population size. Essbase database attribute dimensions can help you with this type of analysis. One of the most notable features of an attribute dimension is the fact that the entire dimension is a dynamically calculated dimension. Previously we told you about dynamically calculated members in a standard outline. In an attribute dimension all members are dynamically calculated. What this means is that Essbase does not need to store the data for an entire dimension All of the data is calculated on the fly when requested and goes away when the user is finished. This as previously mentioned is a huge benefit when considering CPU performance and storage options. Here are a few facts about attribute dimensions An attribute dimension is a dimension that must be associated with a standard dimension. An attribute dimension can only be associated with one standard dimension but a standard dimension can be associated with many attribute dimensions. An attribute dimension can only be associated with a Sparse standard dimension. This is an important point. To create an attribute dimension and associate it to a standard dimension you need to do the following 1. Create a new dimension and tag it as an attribute dimension. 2. Next create an association between this new attribute dimension and the standard dimension you wish to track attributes .

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