What is dimension hierarchy in Obiee?

What is dimension hierarchy in Obiee?

OBIEE – Dimension Hierarchies. 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 − Dimensions with level-based hierarchies.

Does Obiee support snowflake schema?

Snowflake schema is used in application layer of OBIEE.

How do you attach snowflakes in Obiee?

To connect to Snowflake:

1. Set User and Password to your Snowflake credentials and set the AuthScheme property to PASSWORD or OKTA.
2. Set Warehouse to the Snowflake warehouse.
3. (Optional) Set Account to your Snowflake account if your URL does not conform to the format above.

What is star and snowflake schema?

Star and snowflake schema designs are mechanisms to separate facts and dimensions into separate tables. Snowflake schemas further separate the different levels of a hierarchy into separate tables. Primary key/foreign key relationships are used in relational databases to define many-to-one relationships between tables.

How do I create a level-based hierarchy in Obiee?

Level-Based Measures in Oracle Business Intelligence (OBIEE)

1. We create another measure called ‘Brand Revenue’ which is a duplicate of ‘Revenue’ in the repository (RPD).
2. Click on its properties and in the ‘Levels’ tab specify the logical level as ‘Product Brand’ for Logical Dimension ‘H2 Product’. Save the RPD.

What is priority group in Obiee 11g?

You can set priority group numbers to determine which logical table source should be used for queries for which there is more than one logical table source that can satisfy the requested set of columns. For example, you might have user queries that can be fulfilled by both a data warehouse and an OLTP source.

How do you turn a star schema into a snowflake?

Merging Fournisseur to Assortiment should turn your snowflake into a star schema. But note that only because it is a star schema doesn’t make it more performant than the snowflake.

Can OAC connect to Snowflake?

Oracle issued the Snowflake Connector for Oracle Analytics Cloud (OAC) in the March 105.2. 0 OAC release, which means that Data Visualization (DV) in OAC can now connect directly to Snowflake with no “under-the-hood” configuration needed.

Is Obiee a data warehouse?

OBIEE – Data Warehouse. Data Warehouse (DW or DWH) is a system used for analysis of data and reporting purposes. They are repositories that saves data from one or more heterogeneous data sources. They store both current and historical data and are used for creating analytical reports.

What is star snowflake?

This schema forms a star with fact table and dimension tables. Snowflake Schema: Snowflake Schema is also the type of multidimensional model which is used for data warehouse. In snowflake schema, The fact tables, dimension tables as well as sub dimension tables are contained.

What is snowflake data model?

In computing, a snowflake schema is a logical arrangement of tables in a multidimensional database such that the entity relationship diagram resembles a snowflake shape. When it is completely normalized along all the dimension tables, the resultant structure resembles a snowflake with the fact table in the middle.

How do I create a logical dimension in Obiee?

Create a Logical Dimension for Product In the BMM layer, right-click the Sample Sales business model and select New Object –> Logical Dimension –> Dimension with Level-Based Hierarchy to open the Logical Dimension dialog box. 2 .

Which is the first type of hierarchy in obiee?

Level-based hierarchy is the first type of OBIEE 10G/11G – Dimension Hierarchy (logical dimensions) in OBIEE.

Where do you find logical dimensions in obiee?

Logical dimensions can exist in the Business Model and Mapping layer and in the Presentation Layer. Adding logical dimensions to the Presentation layer exposes them to users, which enables users to create hierarchy-based queries. You implement four logical dimensions for ABC: Time, Product, Office, and Customer.

How to create dimension with level based hierarchy?

See Working with Physical Hierarchy Objects. 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. This option is only available when there is at least one dimension table that has no dimension associated with it.

Can a skip level hierarchy be an unbalanced hierarchy?

Unbalanced hierarchies are not necessarily the same as parent-child hierarchies. Parent-child hierarchies are unbalanced by nature. Unbalanced level-based hierarchies are possible. A skip-level hierarchy is a hierarchy where there are members that do not have a value for a particular ancestor level.