The program you used at the museum is an example of a geographic information system, or GIS. A GIS is a type of computer software. The basis for this software is a computerized map. Like a regular paper map, a GIS map shows where things are located. A GIS, however, is much more than a map. It also contains a database of information about the things on the map, such as what was displayed in each room of the museum. In addition, the GIS contains software that analyzes the database and map information to find connections between them. Searching for gemstone displays in the museum is an example of a GIS analysis. To answer your question, the software examined the database and map, and gave you the location of the gemstone exhibit. There is no fixed information to go with the map in a GIS. Some GIS show where power lines run, others show the roads, while others show schools.