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# 04 · Schema Builder, the honest map
- URL: https://www.namastesalesforce.com/training/data-model/schema-builder-the-honest-map/
- Published: 2025-04-23T09:00:00.000Z
- Updated: 2025-04-23T09:00:00.000Z
- Description: The one Setup tool that shows your data model as it is, not as the ERD on the wiki claims it is.
- Author: Swarnil Singhai
- Tags: Data Model Basics, #training, #duration-10m, #Import 2026-09-03 19:13

The one Setup tool that shows your data model as it is, not as the ERD on the wiki claims it is.

## Read before you draw

Open Schema Builder on any org you inherit. The orphaned objects and mystery lookups you find in ten minutes would take a week of clicking through Object Manager.

## Draw carefully

Schema Builder can create fields and relationships directly — convenient in a Developer Edition, a footgun in production. Look with it; build through your normal deployment path.

## Practice in your org

- Open your Developer Edition org and follow along step by step
- Change one thing at a time and note what happens
- When something breaks, read the error before searching for it