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Configuration
Configuring Unica Discover involves setting up and managing Discover user authorization and configuring Discover server components and services that process captured data.
Unica Discover Event Manager Manual
Manage Events - Dimensions Tab
Through the Discover Event Manager, you can specify data dimensions to track metadata associated with an event. They can be considered the contextual data captured at the moment of event execution.
Dimension Definitions
Avoid creating dimensions to contain a high number of values

Avoid creating dimensions to contain a high number of values

Avoid creating dimensions that contain a high number of unique values, as they can unnecessarily clutter the reporting database and your reports. For example, it may be tempting to create a dimension to track shopping cart values. However, this dimension could contain thousands of different values. When applied to a report, the report can become cluttered. Filtering the report by Top-N values or a specific set of values may not be meaningful.

Note: To capture data such as price, which could contain theoretically a limitless number of values, Discover recommends using numeric group lists to bucket the dimension values into groupings such as low, medium and high. See Manage Events - Dimensions Tab.