Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: A Geographical Information System (GIS) links spatial data with descriptive information about a particular feature on a map.
Reason R: The information is stored as attributes of the geographically represented features.
In light of the above statements, choose the correct answer from the options given below:

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is NOT the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Hint:

To understand GIS architecture:
- Spatial data answers the question: "Where is it?"
- Attribute data answers the question: "What is it?"
The link between these two is what makes GIS a powerful tool.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
A Geographic Information System (GIS) is a computer-based framework designed to capture, store, manipulate, analyze, manage, and present all types of geographical and spatial data.
The core capability of GIS is its ability to integrate spatial coordinates with descriptive non-spatial information.

Step 2: Detailed Explanation:
Let us examine the relationship between the Assertion and the Reason:
- Assertion A: In a GIS database, every map feature is associated with two types of data:
Spatial Data: This defines the location and geometry of the feature on the Earth's surface (represented as points, lines, or polygons).
Descriptive (Non-spatial) Data: This provides characteristics about that location (such as soil type, crop yield, or owner name).
The system links these two data types, allowing users to query and analyze the data based on both location and characteristics.
Therefore, Assertion A is true.
- Reason R: The non-spatial, descriptive information is stored in structured tables known as attribute tables.
In these tables, each row corresponds to a specific spatial feature on the map, and each column represents a different attribute of that feature.
This database structure explains how the system links the descriptive information to the spatial coordinates on the map.
Therefore, Reason R is true and provides the correct explanation for Assertion A.

Step 3: Final Answer:
Both A and R are true and R is the correct explanation of A.