Model Details
Symbols & Controls
Controls
Drag objects to move
Drag Empty Space to select objects
Shift+Click to add/remove from selection
Shift+Drag to connect (smart logic)
Shift+Ctrl+Drag to force lateral connect
Click object to select (then use panel to delete/add sister)
Click line to select (then use panel to edit)
Click empty space or press Esc to deselect
Type in panel to add annotation to a selected line.
Text Editing Panels
Click Description for a human-readable summary.
Click Raw Data for the JSON source.
Edit text in either panel and click Apply Changes to update the Model.
Relationship Types
A → B: "is a kind of"
A ← B: "is a kind of" (rev)
A ◇ B: A "has" B
B ◇ A: B "has" A
Ambiguous →
Ambiguous ←
Ambiguous ↔
Forked (auto-groups)
Welcome!
Hi there. The canvas at left can be used to compose object-relational models with drag and drop, but the easiest way to build your model is to just type in the "Description" panel to your right.
One of the most helpful features is the Flip-Direction button that appears after you click on one of the connecting lines. Try it with the line between Sandwich and Taco?.
(Click anywhere to close this tip)