What is gis and its disadvantages?

GIS or geographic information systems is a type of computer program. While there are several types, the industry leader is ArcGIS by ESRI. GIS allows you to take large amounts of data and to process it and produce maps, DEM (digital elevation models), charts, graphs, political maps, parcel maps, utilities, roads, land forms, or any other kind of digital representation of a real world feature.

The good: It is effective, quick compared to other methods, and allows you to use and share large amounts of data.

The bad: It requires some skill to use. Jobs require a degree. It can freeze or crash, especially if the user is unfamiliar with the program or if their computer is incapable of handling the program.