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Welcome to ArcGIS Desktop Help
Copyright information
GIS Dictionary
What's new in ArcGIS

What's new in ArcGIS 9.2
Migration guides
Migrating from ArcView GIS 3 to ArcView 9
Migrating from ArcInfo Workstation to ArcGIS Desktop
Getting started
Map projections and coordinate systems
Getting started with map projections

An overview of map projections

Projection basics the GIS professional needs to know

About the geoid, ellipsoid, spheroid and datum, and how they are related

Identifying an unknown coordinate system

Converting Degrees Minutes Seconds values to Decimal Degree values
Geographic coordinate systems

About geographic coordinate systems

Spheroids and spheres

Datums

North American datums

What happens to features at +/-180 (dateline)?
Projected coordinate systems

About projected coordinate systems

About map projections

Projection types

Planar projections

Conic projections

Cylindrical projections

Other projections

Projection parameters
Geographic transformations
Supported map projections
Vertical coordinate systems

About vertical coordinate systems

Vertical datums

Geoid
Mapping and visualization
Editing and data compilation

An overview of editing and data compilation
Getting started with editing
Common editing tasks
Creating new features
Editing existing features
Editing attributes
Editing annotation
Editing dimension features
Using a digitizer
Spatial adjustment
Editing topology
Editing relationships and related objects
COGO
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
An overview of the Geodatabase
Architecture of a geodatabase
Designing a geodatabase
Building a geodatabase
Data management workflows, transactions, and versioning
Geodatabase data storage and schema

How geodatabases are stored in a DBMS
Feature geometry and raster data storage
Inside a geodatabase in Oracle
Inside a geodatabase in SQL Server
Inside a geodatabase in DB2
Inside a geodatabase in Informix
Administering ArcSDE geodatabases
Administering File and Personal geodatabases

An overview of administering file and personal geodatabases

File geodatabases: compressing vs. compacting

Compacting file and personal geodatabases

About compressing file geodatabase data

Upgrading personal geodatabases

File geodatabases and the file system
Working with geodatabases using SQL
Data management with ArcCatalog
Data support in ArcGIS

An overview of data support in ArcGIS

Data formats supported in ArcGIS
CAD data
Coverages
NetCDF: multidimensional, time series data
Raster data
Shapefiles
Tables and attribute information
Terrains
Extensions
Geocoding and address management
Linear referencing
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services