4 Main GIS Subsystems: Data Input Subsystem, Data Storage and Retrieval, Subsystem, Data Manipulation & Analysis Subsystem, Data Output and Display Subsystem (Especially for GATE-Geospatial 2022)

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A powerful set of tools for collecting, storing, retrieving, transforming, and displaying spatial data from the real world

This Diagram Shows Subsystem Definition of GIS

A GIS has four main subsystems. These are:

  1. A data input subsystem
  2. A data storage and retrieval subsystem
  3. A data manipulation and analysis subsystem
  4. A data output and display subsystem
This Diagram Shows GIS Subsystem

Data Input Subsystem

Data input subsystem was collects and processes spatial data from various sources. That allows user to import, create and edit spatial and tabular data. The data inputs are usually derived from a combination of hard copy maps, aerial photographs, remotely sensed images, reports, survey documents, etc.

Data Storage and Retrieval Subsystem

A data storage and retrieval subsystem that organizes data in a manner that allows storage, retrieval, updating and editing. This component usually involves use of a database management system (DBMS) for maintaining attribute data.

Data Manipulation & Analysis Subsystem

It provides to tools to examine characteristics of data and model building capabilities (classification, modeling functions) . This subsystem is commonly thought of as the heart of a GIS, and usually distinguishes it from other database information systems and computer-aided drafting (CAD) systems.

Data Output and Display Subsystem

The data output subsystem allows the user to generate graphic designing/displaying maps, graphics, text and tabular reports representing derived information products.

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