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+# Using PostGIS to build a geographic data application
+
+## Introduction
+
+This is a small application that uses [PostGIS](https://postgis.net/)
+to save data associated with geographic coordinates.
+
+If you are using a SQLite database, see [this other example instead](../make%20a%20geographic%20data%20application%20using%20sqlite%20extensions/),
+which implements the same application using the `spatialite` extension for SQLite.
+
+### Installation
+
+You need to install the `postgis` extension for postgres. Follow [the official instructions](https://postgis.net/documentation/getting_started/).
+
+Then you can instruct SQLPage to connect to your database by editing the [`sqlpage/sqlpage.json`](./sqlpage/sqlpage.json) file.
+
+## Screenshots
+
+![](./screenshots/code.png)