Chapter 12 Reading Question 19 The most distinguishing characteristic of geographical information systems is: Every record or digital object has a unique identifier. Every record or digital object is visible to the user. Every record or digital object must be accessed by programmers. Every record or digital object has an identified geographical location. Every record or digital object is encrypted.

Every record or digital object has an identified geographical location.

Explanation:

Digital object:

This refer to any type of information The object may be classified into simple or complex Even the graphical item, sounds can be considered as object An object can be from simple pen to a database is considered as object in terms of Information system In simple we can call an object as "data" Any digital object will have properties We can make relationships with object