Make sure to test the connection by clicking "Test Connection". Now you should be able to run the scripts under src/db.
If you're seeing issues such as "column [something] of relation [something] doesn't exist" but you've run the schema scripts, you probably have different database name under the data source than the one the constant DATABASE_NAME is set to. To change this, right click on the data source in the Database tab and select "Properties".
== Directory Layout ==