In this tutorial I will show you how to create Entity-Relationship Diagram (ERD) with DataGrip.
From View toolbar select Tool Windows -> Database or press Alt + 1 combination.
Fig. 1. Database in toolbar
In Database window find your connection and database. Select appropriate tables or even all schemas and right click on it. From context menu choose Diagrams -> Show Visualization… or CTRL + ALT + SHIFT + U shortcut.
Fig. 2. Generate diagram with selected tables
You can save generated report as image by right click anywhere in diagram area and select Export to file from menu or by click on export icon below tabs.
Fig. 3. Exporting database diagram to file
You will be asked for choosing a destination path and file format. After clicking OK, ready ERD will be placed in provided path.