The Geodatabase (Single and Multi-User) : Modeling and Managing Spatial Data (Especially for GATE-Geospatial 2022)

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The geodatabase (GDB) is the common data storage and management framework for ArcGIS. The geodatabase has been the primary data model for ArcGIS since the 8.0 release.

This Diagram Shows GIS Data in the Geodatabase

With a geodatabase, all of an organization՚s GIS data can be stored in a central location and in a uniform format for easy access and management. The geodatabase can be scaled to suit a single-user or multiuser access and editing environment.

GIS Data Storage

Vector data is stored in the geodatabase as thematic layers called feature classes. A feature class is a collection of geographic features with the same geometry type, such as a point, line, or polygon; the same attributes; and the same coordinate system.

Types of Geodatabases

The geodatabase is designed to support both the individual GIS user and organizations of various types and sizes. There are two main classes of geodatabase: multiuser and single user.

This Diagram Shows Types of Geodatabases

1. Multiuser Geodatabase

Multiuser geodatabases use ArcSDE technology and are implemented on an RDBMS platform. ArcSDE technology provides additional geodatabase functionality that is not available in single-user geodatabases. This includes versioning, geodatabase replication and geodatabase archiving.

There are three types of multiuser geodatabase: enterprise, workgroup and desktop.

  • Enterprise Geodatabase
  • Workgroup Geodatabase
  • Desktop Geodatabase

2. Single-User Geodatabase

The single-user geodatabase class has two types – the file geodatabase and the Microsoft Access personal geodatabase. Both types of geodatabase are intended for an individual GIS user, and both are available with all license levels of ArcGIS Desktop.

  • File Geodatabase
  • Microsoft Access Personal Geodatabase

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