What is dimension hierarchy in Obiee?
OBIEE – Dimension Hierarchies. Advertisements. Hierarchies is a series of many-to-one relationships and can be of different levels. A Region hierarchy consists of: Region → Country → State → City → Street. Hierarchies follow top-down or bottom-up approach.
What are dimensions in Oracle?
A dimension is a structure that categorizes data in order to enable users to answer business questions. Commonly used dimensions are customers , products , and time . For example, each sales channel of a clothing retailer might gather and store data regarding sales and reclamations of their Cloth assortment.
What are logical dimensions?
There are two types of logical dimensions: dimensions with level-based hierarchies (structure hierarchies), and dimensions with parent-child hierarchies (value hierarchies). Level-based hierarchies are those in which members are of several types, and members of the same type occur only at a single level.
Which one is optional in cube development steps?
Optional: To automatically create a table for the measure dimension, select the Create Measure Dimension Table option.
What is ragged hierarchy in Obiee?
Ragged Hierarchies The number of levels in all the branches of a hierarchy are not equal. All child nodes/lowest nodes are not at the same level, one or more of the nodes are in a higher level. For example, the Asset Accounts has 4 Levels while Liabilities may have only 3 Levels.
What are aggregate tables in Obiee?
OBIEE – Aggregates Aggregations are used to implement query performance optimization while running the reports. This eliminates the time taken by query to run the calculations and delivers the results at fast speed. Aggregate tables has less number of rows as compared to a normal table.
How many dimensions can a general planning application contain?
General Planning applications can contain thirty-two standard and custom dimensions. There are seven standard dimensions: Account, Entity, Scenario, Version, Period, Years, and Currency.
How do I create a logical dimension in Obiee?
To create a dimension with a level-based hierarchy:
- In the Business Model and Mapping layer of the Administration Tool, right-click a business model and select New Object > Logical Dimension > Dimension with Level-Based Hierarchy.
- In the Logical Dimension dialog, in the General tab, type a name for the dimension.
What are logical tables?
Logical tables are MicroStrategy objects that form the foundation of a schema. Physical tables in a data warehouse consist of columns, and logical tables in the MicroStrategy schema relate this column data to attributes and facts.
What is a sparse dimension?
Sparse dimensions lack data values for the majority of member combinations. Dense dimensions have data values for the majority of member combinations. At least one dense dimension is required. Custom attributes cannot be assigned to dense dimensions.
What is implicit fact in Obiee?
To guide OBIEE in the best choice, you need to select a fact attribute (measure) as an implicit fact column. The implicit fact column is used for queries that only select dimension attributes (no facts) from two or more dimensions.
How do I create a parent child hierarchy in Obiee?
Perform either of the following steps listed below:
- Right-click the business model object and select New Object -> Logical Dimension -> Dimension with Parent-child hierarchy.
- Right-click the logical dimension table and select Create Logical Dimension -> Dimension with Parent-Child hierarchy.
What is aggregate navigation in Obiee?
Aggregate navigation is important of the presentation layer objects. The prebuilt aggregate tables can be used to improve performance of the server. The matching levels of aggregation should be done for fact and dimensions.
How do you make an aggregate table?
You can create the aggregated table with T-SQL statements from SQL Server. Or you can create it in Power Query. You can create it in all other data transformation tools and query languages possible. Since we are doing everything with Power BI here, I’ll create the aggregated table with Power Query.
What are three basic types of dimensions?
There are three different types of dimensions on prints: Reference Dimensions, Tolerance Dimensions, and Basic Dimensions.
How many time periods can an application have?
An application can have up to 500 time periods. Actual limits are defined by a combination of calendar years and time periods.