Introduction to Geographic Databases

1
Introduction to Geographic Databases

• GLY 560GIS for Earth Scientists

Class Home Page http//www.glyfac.buffalo.edu/co
urses/gly560/
2
The Geodatabase

• A relational database that stores spatial and
  attribute data
• Supports data integrity with rules

3
Database types

• Personal Geodatabase
• 2 GB size limit
• Single editor
• MS Access based
• Multiuser Database
• Unlimited size
• Multiuser
• Needs additional database software (e.g. Oracle)

4
Advantages of Geodatabase

• Centralization and management of spatial data
• Development of rules and restrictions on data
  access and relationships

5
Elements of a Geodatabase
6
Geodatabase Tables
7
Feature Class Properties
8
Storing Feature Classes
9
Feature Datasets
10
Relationship Classes
11
Geodatabase Topologies
12
Geodatabase in ArcGIS

• ArcCatalog
• Manage data
• ArcMap
• Create maps and perform spatial analysis
• ArcTools
• Perform operations on spatial data