Question 1

What is an ER diagram?

Accepted Answer

An Entity-Relationship (ER) diagram is a visual representation of the structure of a relational database. It shows entities (tables), their attributes (columns), and the relationships (foreign keys) between them.

Question 2

Can I export the diagram?

Accepted Answer

Yes. You can download the diagram as an SVG (vector) or PNG (raster) image, and export the underlying schema as SQL CREATE statements.

Question 3

Do I need to install anything?

Accepted Answer

No. The tool runs entirely in your browser. Drag tables around, add columns, mark primary and foreign keys, and everything updates instantly.

Question 4

Is my diagram saved anywhere?

Accepted Answer

No. All data stays in your browser tab. To save your work, use the Export buttons to download SVG, PNG or SQL.