Every platform with tables and relations has an entity relationship poster on its platform page, under "Data model poster". The poster shows the tables grouped per topic and the relations between them. It is generated from the data model of the driver and is therefore never out of date. A large data model is spread over several sheets. The poster of Pipedrive on its platform page:  The poster can be used as follows: - Zoom in and out with the buttons, the mouse wheel or a pinch, and move the poster by dragging it. - On a table of the poster, `+` and `-` zoom, the arrow keys move, and `0` fits the poster to the screen again. - Choose a topic to show only the tables of that topic. - Type in "Find a table" to find a table on the poster. - Point at or focus a table to highlight its relations; the rest of the poster fades. - Hide the candidate relations: relations that are likely but are not declared as a key. - Choose another sheet where the poster has several. The same content is also available as text: the tables per topic and their relations, for readers who do not use the drawing. ## Kinds of Relations A relation is drawn according to its kind: - a key that the platform guarantees, - a relation that the documentation of the platform describes in words, - a candidate relation, derived from the names of the columns, drawn dotted. When a data model declares no keys yet, the page says so and the dotted relations are all derived from column names. ## PDF The poster is available as PDF at `/{lang}/datamodels/{provider}/poster.pdf`, for example to print it on A0. The PDF is in the language of the page. The short link `/eolerd` opens the poster of Exact Online. ## Limits A data model with more than 5,000 objects, or one without tables to draw, has no poster; its tables are listed on the platform page instead. Where a hand-drawn poster exists but no longer matches the tables of the data model, the generated poster is shown until the hand-drawn one is updated.