Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks About the Oracle Essbase Technical Reference. Technical Reference. Contents .. The Oracle Essbase Technical Reference describes commands, functions, and configuration aspects of Oracle Essbase. Oracle programs, including any operating system, integrated software, any programs installed on the About the Oracle Essbase Technical Reference.
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Technical Reference .. Oracle® Essbase Oracle programs, including any operating system, integrated software, any programs installed on the hardware. Documentation Accessibility. Expand node, Oracle Essbase Technical Reference Overview Expand node, bilgedumarre.cf Configuration Settings. Expand node. Essbase and Provider Services Java API Reference. HTML. Smart View for Office User's Guide * Statistics Java Package. HTML. Technical Reference *. HTML.
Because the database hides this implementation from front-end tools i. Users can specify calculations in Essbase BSO as: the aggregation of values through dimensional hierarchies; stored calculations on dimension members; "dynamically calculated" dimension members; or procedural "calculation scripts" that act on values stored in the database.
The first method dimension aggregation takes place implicitly through addition, or by selectively tagging branches of the hierarchy to be subtracted, multiplied, divided or ignored. Also, the result of this aggregation can be stored in the database, or calculated dynamically on demand—members must be tagged as "Stored" or "Dynamic Calc.
The third method dynamic calculation is specified in exactly the same format as stored calculations, but calculates a result when a user accesses a value addressed by that member; the system does not store such calculated values. The fourth method calculation scripts uses a procedural programming language specific to the Essbase calculation engine.
This type of calculation may act upon any data value in the hypercube, and can therefore perform calculations that cannot be expressed as a simple formula. A calculation script must also be executed to trigger the calculation of aggregated values or stored calculations as described above—a built-in calculation script called the "default calculation" can be used to execute this type of calculation. Aggregate storage Enterprise Analytics [ edit ] Although block storage effectively minimizes storage requirements without impacting retrieval time, it has limitations in its treatment of aggregate data in large applications, motivating the introduction of a second storage engine, named Aggregate Storage Option Essbase ASO or more recently, Enterprise Analytics.
Following a data load, Essbase ASO does not store any aggregate values, but instead calculates them on demand. For large databases, where the time required to generate these values may become inconvenient, the database can materialize one or more aggregate "views", made up of one aggregate level from each dimension for example, the database may calculate all combinations of the fifth generation of Product with the third generation of Customer , and these views are then used to generate other aggregate values where possible.
This process can be partially automated, where the administrator specifies the amount of disk space that may be used, and the database generates views according to actual usage.
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Government or anyone licensing it on behalf of the U. For large databases, this can cause the effective storage requirements to be many hundred times the size of the data being aggregated.
514 aggregation see the oracle essbase database
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The first method dimension aggregation basically duplicates the algorithm used by Essbase BSO. If this is software or related documentation that is delivered to the U. Member set functions, which are used to build member lists based on other members.
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