srid란 map projection 하나 모아서 이 id 이용5. Loading spatial data - Introduction to PostGISSupported by a wide variety of libraries and applications, PostGIS provides many options for loading data. This section will focus on the basics - loading shapefiles using the PostGIS shapefile loading tool. First, return to the Dashboard, and click on the Import shapefiles link in the PostGIS section.https://postgis.net/workshops/postgis-intro/loading_data.html