Purpose
Building a custom report in Sigma often means knowing what fields are available, what they mean, and how datasets relate to each other. The Data Map is an interactive reference panel that slides in alongside the Reporting page or any individual report, so that information is always one click away. Because it's generated automatically from the underlying data warehouse, it stays current in a way a static reference document can't.
Key Features
In-Context Data Map Panel: Opens directly from the Reporting landing page or from within any individual report, without navigating away, and stays open while moving between them.
Data Tables: Browse every dataset as a card showing its description and column count. Open one for its full definition, its joins to other tables, its grain, and its complete column list.
Columns: Search every field in the schema by name or description. Open a field to see its definition and every data table it appears in.
In-Editor Lookup: While building or editing a report, selecting a column in the workbook editor's field list updates the Data Map to that column's definition automatically.
Copy-to-Clipboard: Copy a field's or table's identifier directly from its detail view.
Always Up to Date: Datasets, fields, and their descriptions are generated automatically from the data warehouse on a recurring schedule, so the Data Map stays in sync with the data model without manual upkeep.
Target Users
Users who build, maintain, or review reports in Reporting.
How It Works
1. Opening the Data Map
From the Reporting landing page or an individual report, select Data Map in the page header. The panel opens from the right side of the screen, and the page content shifts over to make room.
Select Data Map again, or the x in the upper-right corner, to close the panel.
The panel's open/closed state and active tab carry over when navigating from the Reporting landing page into an individual report.
2. Browsing Data Tables
The Data Tables tab shows every dataset as a card with its name, a short description, and its column count.
The search box filters by both name and description in real time.
Selecting a card opens its detail view, which includes:
A full definition
A Joins section showing how it connects to other tables
Its Table Granularity
Its complete list of columns (with a Show all N columns link for longer tables)
3. Browsing Columns
The Columns tab shows a single, searchable list of every field across the schema, each noting how many data tables it appears in.
Selecting a field opens its detail view: its data type, full definition, and an Appears in N Data Tables list showing every dataset that includes it.
4. Using It While Building a Report
With the Data Map open, selecting a column in the Reporting workbook editor's field list updates the panel to that column's definition. Field meaning is available without switching context while building or troubleshooting a report.
5. Copying an Identifier
Every field and table name in its detail view has a copy icon that copies the underlying identifier for use elsewhere.
Benefits
No more guessing what a field means or digging through an outdated static reference.
Always reflects the current data model, with no manual maintenance required to keep it accurate.
Available wherever reporting work happens, without leaving the page.
Speeds up building and troubleshooting custom reports.
Best Practices
Search matches descriptions as well as names, so searching in plain language (for example, "deal") often surfaces the right field or table faster than guessing an exact name.
Check a table's Joins section to understand how it relates to other data before building a report that spans multiple tables.