Table of Contents
What are types of hierarchies in Obiee?
Types of Level-based Hierarchies
- Unbalanced Hierarchies. Unbalanced hierarchies are those where all the lower levels don’t have the same depth.
- Skip Level Hierarchies. In skip-level hierarchies, few members don’t have values at higher level.
- Dimension with Parent-child Hierarchies.
What is parent/child hierarchy in Obiee?
A parent-child hierarchy is a hierarchy of members that all have the same type. This contrasts with level-based hierarchies, where members of the same type occur only at a single level of the hierarchy.
What are dimension hierarchies?
Dimension hierarchies define structural and mathematical relationships, and consolidations between members in the database. Relationships are represented graphically in a collapsible hierarchy diagram. The levels below the database name are dimensions, and the levels below each dimension are members.
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 is level based hierarchy?
As the name implies Level-Based Hierarchies are used when your data has different levels of data. Some examples are Division > Region > State > City > Store and Product Category > Sub-Category > Product. In Level-Based Hierarchy, the upper levels will be properties of the dimension.
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 are dimensions hierarchies give three examples?
Hierarchy. Some dimensions can have multiple levels forming a hierarchy. For example dates have year, month, day; geography has country, region, city; product might have category, subcategory and the product.
How do I create a parent child hierarchy in Obiee?
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.
What is parent/child hierarchy?
A parent-child hierarchy is a hierarchy in a dimension that is based on two table columns. Together, these columns define the hierarchical relationships among the members of the dimension. The first column, called the member key column, identifies each dimension member.
What is the difference between levels and dimensions?
Levels are subdivisions of a dimension. Levels group information of the same type. For instance, a level within the Product dimension could be Department. The Department level would contain all the departments that exist.
What is OLAP hierarchy?
A Hierarchy is a systematic way of organizing the Members of a Dimension into a logical tree structure that defines parent-child Aggregation relationships, where Parent Members, i.e., Aggregate Members, correspond to the consolidation of Child Members.
What is balanced hierarchy?
In balanced hierarchies (balanced/standard), the branches of the hierarchy all descend to the same level, with each member’s parent being at the level immediately above the member.
How do you model a ragged hierarchy?
A ragged hierarchy can represent a geographic hierarchy in which the meaning of each level such as city or country is used consistently, but the depth of the hierarchy varies. Figure 1 shows a geographic hierarchy that has Continent, Country, Province/State, and City levels defined.
What is dimension hierarchy in obiee?
OBIEE – Dimension Hierarchies. 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 the different types of hierarchies in BMM?
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. Logical dimensions or dimension hierarchies are created in BMM layer. There are two types of dimensional hierarchies that are possible −
How many types of dimensional hierarchies are there?
There are two types of dimensional hierarchies that are possible − Dimensions with level-based hierarchies. Dimension with Parent-Child hierarchies. In level-based hierarchies, members can be of different types and members of the same type come only at single level.
What are level-based dimension hierarchies?
Level-based dimension hierarchies can also contain parent-child relationships. The common sequence to create level-based hierarchies is to start with grand total level and then working down to lower levels. Level-based hierarchies allows you to perform − Level-based calculated measures.