Question

The spatial data is linked with associated attribute data by means of a common key called .........

• A. Unique ID
• B. Special ID
• C. Unique number
• D. Special number

Hint:

Always use a Unique ID to join spatial and attribute data accurately.

Answer 1

The Correct Option is A

Spatial data in GIS databases (e.g., maps, coordinates) is linked to attribute data (e.g., descriptions, statistics) via a common key field.
This key is generally referred to as a Unique ID (UID).
The UID guarantees that each spatial feature can be accurately associated with its corresponding attribute information.
Without a unique identifier, establishing a one-to-one link between spatial and tabular data would be unachievable.
Consequently, (A) Unique ID is the accurate response.