Introduction to InterSystems DeepSee - InterSystems Documentation

Pivot Tables
Note the following technical points about the DeepSee indices:
• These indices are bitmap indices, but they use an implementation of bitmap indices that predates
the standard Caché bitmap indices. This means that they are suitable only for use by DeepSee.
• These indices are case sensitive.
• Nulls are not indexed. DeepSee does, however, provide options for handling nulls.
1.3 Pivot Tables
Pivot tables are central to InterSystems DeepSee; they select and aggregate data and display it in an
interactive format.
In InterSystems DeepSee, the phrase pivot table is a generic phrase that can mean a tabular display of
data, a graph of the same data, or a combination format. We start by looking at pivot tables in table
format.
The following figure shows an example pivot table, in table format. It shows how many orders were
placed in different countries, grouped by product category and order year.
Introduction to InterSystems DeepSee 5