BZFAR

ERD Builder

Entities and relationships · 11.2.2.2

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OneMany
Drag entities to move them. Drag empty space to pan.

Entities

    How to build and save an ERD
    1. Add named entities. Drag the rectangles into position.
    2. Select From, To and the relationship type. Add an optional verb, then add the relationship.
    3. Click a rectangle or line to edit it. For 1:M, put the one side in From. Use Swap ends to reverse it.
    4. Download PNG for a document or SVG for a scalable image. Only the diagram is included.
    5. Save project downloads an editable .erd.json file. Open project restores it. PNG and SVG cannot be opened as editable projects.

    A draft is saved in this browser when storage is available. Download the project to keep a separate copy. Projects are not stored on the server.

    Keyboard: arrow keys move the selected entity; Shift + arrow moves by 1 px. Delete removes the selection. Ctrl/Cmd + Z undoes; Ctrl/Cmd + S saves the project.

    This editor uses entity names and one/many marks. Read every relationship in both directions and follow the rules of your scenario.

    Connections move with the entities. Leave enough space for labels and adjust positions if lines cross other objects.