Real-time geographic information systems (GIS) mapping is possible with online suppliers for application in surveying and mapping projects. Keyhole Markup Language (KML) is the format used to display geospatial points in Google Earth, Google Maps, and Google Maps for Mobile. Some tags are optional for programming with KML. Because this is a mark-up language, key words or tags are used to generate geographic features and map elements. In each element, the tags must be in a specific order within the KML. When Google Maps is generating a map within the KML the features and elements are drawn within a linear progression through the coded file. Utilization of this KML data for real-time mapping activities on land surveying and engineering projects is investigated in this research. This research will show how producing database files in the office or field and making the data available to users in realtime.
The simplest forms of Keyhole Markup Language (KML) documents are those that can be created directly in Google Earth. Google Earth will generate a KML coded file when data is created and saved from Google Earth. Points, raster images, paths, and polygons can be created within Google Earth. The software can write a KML file. The simplest form of a placemark contains only a two-dimensional point. A placemark is a point in Google Earth in KML format and is the only way to create an icon within the GIS. The KML file can contain more properties such as polygons and raster images [1].