What is MDX measure?
In Multidimensional Expressions (MDX), a measure is a named DAX expression that is resolved by calculating the expression to return a value in a Tabular Model. This innocuous definition covers an incredible amount of ground.
What is an MDX query?
MDX is a query language designed for OLAP databases, as SQL is a query language for relational databases. MDX is essentially an extension to SQL used for queries and script access to multidimensional data. MDX queries access data stored in a SQL Server Analysis Server cube by bringing back facts related to dimensions.
When an attribute hierarchy is created which levels does it automatically have?
An Attribute Hierarchy is a Hierarchy created by SQL Server Analysis Services for every Attribute in a Dimension by default. An Attribute by default contains only two levels – An “All” level and a “Detail” level which is nothing but the Dimension Members.
What are dimension attributes?
A dimension attribute is a column in a dimension table. Each attribute describes a level of summary within a dimension hierarchy. The dimension elements define the hierarchical relationships within a dimension table. The dimension attributes describe the dimension elements in terms that are familiar to users.
What is MDX calculated member?
In Multidimensional Expressions (MDX), a calculated member is a member that is resolved by calculating an MDX expression to return a value. This innocuous definition covers an incredible amount of ground.
What is a member MDX?
In MDX, you can create a calculated member, which is a member based on other members. You can define two kinds of calculated members: ones that are measures and ones that are not. (Remember that a measure is considered to be a member of the MEASURES dimension.) A calculated measure is based on other measures.
How do I make an MDX query?
To use MDX Query Builder to build a MDX query:
- On the toolbar, click New Data Set and then select MDX Query to launch the New Data Set – MDX Query dialog.
- Enter a name for the data set.
- Select a data source.
- Launch MDX Query Builder.
- Select an Essbase cube for the query.
What is MDX query in SAP BW?
Multidimensional Expressions (MDX) is a language for querying multidimensional data that is stored in OLAP cubes. MDX uses a multidimensional data model to enable navigation in multiple dimensions, levels, and up and down a hierarchy.
What is difference between hierarchy attribute?
In client applications, attributes can be used to provide grouping and constraint information. When attributes are arranged into user-defined hierarchies, you define relationships between hierarchy levels when levels are related in a many-to-one or a one-to-one relationship (called a natural relationship).
What is attribute relationship in SSAS?
Attribute Relationships are usually defined in SSAS when there is a one-to-many relationship between the members within the same dimension. A very common example where we need to define attribute relationships is while developing a Geography dimension.
What does ATTR mean in Tableau?
About ATTR(): ATTR() is a special Tableau function that effectively returns a record-level result as an aggregation. If there are multiple values of the record-level field in the current context then ATTR() will return * instead of a single value.
What are the different types of attributes in data mining?
Different types of attributes or data types:
- Nominal Attribute:
- Ordinal Attribute:
- Binary Attribute:
- Numeric attribute:It is quantitative, such that quantity can be measured and represented in integer or real values ,are of two types.
- Ratio Scaled attribute: