Geodatabases: Difference between revisions
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Data management -- | Data management -- | ||
ArcSDE -- if you use ArcSDE-based geodatabases, you get version control and multiuser features. All you need is lots of money to buy it and Oracle. | |||
PGDB - you can keep all the data for a project in one PGDB. | PGDB - you can keep all the data for a project in one PGDB. | ||
Vector data -- | Vector data -- | ||
Network | |||
Survey data | |||
Raster data -- | Raster data (ArcGIS 9.0+) -- | ||
Annotation -- | Annotation -- | ||
Metadata -- | |||
Tabular data -- | Tabular data -- | ||
Topology rules -- | |||
XML (ArcGIS 9.0+) -- XML can be used to import and export data. The [http://downloads.esri.com/support/whitepapers/ao_/XML_Schema.pdf geodatabase XML schema] is documented on the ESRI site. | |||
== Topology == | == Topology == | ||
I am at home right now, where I use ArcView 8.3. ArcView which does not support topologies. I will write more on this topic when I have access to ArcInfo. | I am at home right now, where I use ArcView 8.3. ArcView which does not support topologies. I will write more on this topic when I have access to ArcInfo. | ||
Revision as of 00:27, 16 January 2006
Introduction to Geodatabases
These are notes written by someone learning to use ESRI geodatabases. Specifically, the variation known as the "personal geodatabase" (or PGDB).
Brian Wilson 16:10, 15 January 2006 (PST)
Scope
I am not attempting to duplicate the ESRI documentation. When I learn something new, I write about it to help cement it more firmly in my head, and so that I can refer back to my notes later.
Quick links to ESRI documentation
Terminology
An informal Comparison of geodata formats
Feature Dataset Feature Class
Why use a geodatabase?
Enterprise class versus PGDB
Data management --
ArcSDE -- if you use ArcSDE-based geodatabases, you get version control and multiuser features. All you need is lots of money to buy it and Oracle.
PGDB - you can keep all the data for a project in one PGDB.
Vector data -- Network Survey data
Raster data (ArcGIS 9.0+) --
Annotation --
Metadata --
Tabular data --
Topology rules --
XML (ArcGIS 9.0+) -- XML can be used to import and export data. The geodatabase XML schema is documented on the ESRI site.
Topology
I am at home right now, where I use ArcView 8.3. ArcView which does not support topologies. I will write more on this topic when I have access to ArcInfo.
