It's also worth mentioning that if pilots are really curious about what data is contained in their Honeywell EGPWS database, it is possible to go to a different Honeywell website and download an Excel spreadsheet that lists every single runway at every single airport that is contained in the world database.
This document does not tell you what areas of the world (away from runways) have been mapped for terrain height, or with what precision (in arc-seconds) various areas of the world have been mapped for terrain height, but it does tell you which runways ('runways' implies final approaches) have been mapped. When a runway is included in the terrain database, the TAWS will know that it is 'acceptable' for the aircraft to descend closer and closer to the ground (eventually reaching the ground and landing on it), provided that the aircraft stays laterally within the appropriate confines of the extended centerline, and provided that the vertical descent path angle of the aircraft is 'sensible' for the runway to which the approach is being conducted.
Other factors are also considered during the final approach - radar altitude, glideslope deviation, aircraft configuration, rate of descent, and so forth - to determine whether the TAWS stays silent or whether it generates an alert, but, if a particular runway has been mapped for the database, this means that the likelihood of hearing a spurious terrain alert during approach is very, very low; provided that the aircraft follows a published approach.
Here is the website you can go to to download all the details about the current database release:
Honeywell EGPWS Airport / Runway Search. You can also enter the Airport Name, City Name, Country Name, or ICAO Airport Identification Code and look up specific information that way, without having to download the entire Excel document.
Michael