Question

Which of the following best describes a relational database structure commonly used in GIS?

• A. Data is organized in a tree-like hierarchy.
• B. Data elements are linked through predefined relationships, forming a network.
• C. Data is organized into tables with rows representing entities and columns representing attributes, with relationships established through keys.
• D. Spatial data and attribute data are stored in separate, unconnected files.

Hint:

Relational = tables + keys. It’s the most common GIS database model.

Answer 1

The Correct Option is C

In GIS, relational databases organize data into tables (relations) where each row (tuple) is an individual record and each column (attribute) holds data about that entity. Keys (primary and foreign) establish logical links between tables.