Data modeling notations

The following notations are used in graphical depictions of hierarchies.

Symbol

Indicates

Definition

entry point

An entry point is a shortcut to an attribute element in the Data Explorer. Creating an entry point grants you faster access to the attribute without having to browse through multiple attributes to reach different levels of the hierarchy.

attribute

A data level defined by the system architect and associated with one or more columns in the data warehouse lookup table. Attributes include data classifications like Region, Order, Customer, Age, Item, City, and Year. They provide a handle for aggregating and filtering at a given level.

one-to-many relationship

An attribute relationship in which every element of a parent attribute relates to multiple elements of a child attribute, while every element of the child attribute relates to only one element of the parent. The one-to-many attribute relationship is the most common in data models.