GIS Exam 1 Questions and Answers 100% Pass

GIS Exam 1 Questions and Answers 100% Pass GIS Definition - A computer-based system to aid in the collection, maintenance, storage, analysis, output and distribution of spatial data and information Spatial Data - Data with a "spatial component" describing where something is located in space (coordinates). Spatially Related Questions (3) - 1. The spatial distribution of objects 2. The relationship between the spatial distribution of objects 3. The association of objects in the area DBMS - A computer based system that allows you to store, update, query and analyze data Spatial DBMS (GIS) - A DBMS that has a spatial "awareness" that allows you to analyze your data based on location and spatial relationships GIS Analysis Process (5) - 1. Scenario 2. Question 2Disclaimer: Original Content, No Copyright Infringement, All Rights Reserved © 2025 3. Planning 4. Define Protocols 5. Gather Data 6. Spatial Analysis 7. Results 8. Create Output/Report Results Data Model - A consistent way of defining and representing real world entities or phenomena in a GIS Vector Data Models - Points, lines, and polygons Raster Data Models - Pixels or grid cells Categories of real world phenomena (2) - 1. Descrete - Usually a vector data model [EX] a road, river, sidewalk, fire hydrant 2. Continuous - Usually a raster data model [EX] elevation, temperature, rainfall Types of data used to define features (2) - 1. Coordinate data - where 2. Attribute data - what Categories of Coordinate Data (2) - 1. Geographic Coordinate System - Lat/Long 2. Projected Coordinate System - UTM, State Plane 3Disclaimer: Original Content, No Copyright Infringement, All Rights Reserved © 2025 Measurement Levels of Attribute Data (3) - 1. Nominal - descriptive data 2. Ordinal - implied order or ranking 3. Interval/ration - numeric data where both order and absolute difference are reflected in the numbers Vector Data Model Types (2) - 1. Spaghetti Vector Data Model - Does not enforce or record connections of line segments 2. Topological Vector Data Model - info is stored about top