Schema Builder is the fastest way to see your org as an ERD and to build on it. Here is how to open it, read the diagram, and use it to add to your model.
- Open Schema Builder
From Setup, type Schema Builder in the Quick Find box and select it. The canvas opens showing whichever objects were last on your layout.
- Add the objects you want to see
Use the Objects panel on the left to select objects, then click them onto the canvas. Drag boxes to arrange them. The platform draws the relationship lines automatically and saves the layout when you move a box.
- Read the relationships
Follow the lines between boxes. Schema Builder shows lookup and master-detail relationships, the fields on each object, and which fields are required, so you can confirm cardinality and relationship type at a glance.
- Build directly on the canvas
Switch to the Elements panel to drag a new object or field onto the diagram, or add a relationship field. The platform applies the change to your org, so treat it as real configuration, not a sketch.
Choose which objects appear and toggle showing or hiding relationships, field labels, and field types to reduce clutter on a busy canvas.
Drag new custom objects, fields, and lookup or master-detail relationships onto the canvas to build your model without leaving the diagram.
Schema Builder remembers where you place each object, so your arrangement persists between sessions for the objects on your view.
- Schema Builder edits are live. Adding or deleting an object or field on the canvas changes your org immediately, so use a sandbox when experimenting.
- A canvas with hundreds of objects becomes unreadable. Show only the domain you care about rather than the whole org at once.
- Schema Builder is for in-org visualization and light building. For polished, shareable documentation, export to or generate from a third-party tool instead.