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Implementing Geodatabase Technology. Kay Anderson & Kendis Scharenbroich Cass, County, ND & Pro-West & Associates. What Is A Geodatabase?. A container for spatial and attribute data Shapefiles, coverages, raster, CAD Personal Geodatabase 2G size limit Stored in an Access database

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implementing geodatabase technology

Implementing Geodatabase Technology

Kay Anderson &

Kendis Scharenbroich

Cass, County, ND & Pro-West & Associates

what is a geodatabase
What Is A Geodatabase?
  • A container for spatial and attribute data
    • Shapefiles, coverages, raster, CAD
    • Personal Geodatabase
      • 2G size limit
      • Stored in an Access database
    • SDE Geodatabase
      • Stored in a RDBMS (Oracle, SQL, etc)
      • Connect through a SDE Server or Direct Connect
benefits of a geodatabase
Benefits of A Geodatabase
  • Intelligent Behavior
    • Spatial & attribute data integrity
  • Centralized Data Storage
  • Advanced analysis capabilities
    • Flow analysis
  • Multi-user editing environment
what is sde

SDE

SQL

GIS

View/Analyze

Interpreter

Storage

What Is SDE?
  • Software that allows a user to manage spatial & tabular data housed within DB2, Informix, SQL Server or Oracle databases.
slide6

ArcInfo

ArcView

MapObjects

ArcIMS

ArcExplorer

SDE

SQL

geodatabase highlights
SDE Geodatabase

Multi-user editing

Data Integrity

Subtypes, domains, rules, etc

Stores Raster Data

Need ArcEditor or ArcInfo to edit

Disconnected Editing

Check-in/out process

Personal Geodatabase

Single user editing

Data Integrity

Domains(AV), rules (AI)

Stores Raster Data

Edit in ArcView

Geodatabase Highlights
multi user editing

Default

Database

Planning

Version

Edit

Version

Plan 1

Version

Plan 2

Version

Multi-user Editing
  • Versioning
  • Snapshot of default database
  • Stores edits only
    • Not a database replication
  • Multiple users can access a
  • single version
domains subtypes
Domains/Subtypes
  • Subtype:
  • Distinguish features within a single layer
  • Water Main
  • Force, Gravity, Temp
  • Domain:
  • Identify attribute values
disconnected editing
Disconnected Editing
  • Mobile Mapping Applications
    • PDA Units, Tablet Computers, Offsite Editing
design 101
Design 101
  • Organize
  • Use Feature Datasets only when you need to
    • Topology or Geometric Networks
    • Several feature datasets with a limited number of feature classes is better for performance
  • Choose Spatial Reference carefully
  • Start with a personal geodatabase
  • Set rules
  • TEST TEST TEST!
is sde right for you
Is SDE Right for You?
  • Do you have the need for multiple people editing the same piece of data?
  • Is mobile mapping in your future?
  • Do you have more than 2G of data to transfer into a geodatabase?
  • Do you want a better way to maintain your data?
esri data models
ESRI Data Models
  • Make implementation to the geodatabase environment easier
  • Create consistency between organizations
  • Support existing FGDC standards
  • Designed with both Users and ESRI

TIP

You do not need to use the entire model

why should cass county make the switch to geodatabases
Why should Cass County make the switch to Geodatabases?
  • Volume of data to be managed keeps increasing
  • Shared updates & maintenance of datasets with The City of Fargo
  • Increasingly unable to represent reality e.g. apartments, mobile home & multi-units
  • Complex data access needs from multiple users on two networks
geodatabase benefits
Geodatabase Benefits
  • Cass County will have the ability to maintain data more efficiently through Topology, subtypes and domains
  • All available data sets will be accessible in a uniform repository
  • Multi-user editing
planning
Planning
  • Consultations started in May with Pro-West & City of Fargo
  • 2005 Budget numbers needed for hardware & software
  • Recognized needs for intranet based GIS application & more interactive IMS site
challenges
Challenges
  • Existing GIS data server almost past sell by date!
  • 150gb of 1ft color Orthophotos arriving the next 2 months need a home!
  • Cass & Fargo need to access and edit the same data across two networks divided by a robust firewall
the nuts bolts
The Nuts & Bolts!
  • Which spatial domain is appropriate?
  • Cass data & imagery in State Plane North Dakota South, Fargo has highly accurate customized projection – who compromises?!
  • Where will the editable version reside?
  • Who will have editing rights?
  • How to replicate the data?
possible solutions
Possible Solutions
  • One GDB with separate Feature Datasets for Cass & Fargo allows different coordinates to be set
  • How will this data behave when pulled in to IMS & intranet browser…need to test the scenarios
what have we done
What have we done?
  • 2005 budget finalized
  • Multiple Storage Array Network installed with 1 TB free space for GIS
  • Experimenting with Cass data in Personal GDB
  • Test different combinations of feature data sets, relationships, subtypes, domains etc.
  • Education – review white papers, best practices, data models, text books
2005 plans
2005 Plans
  • Install SDE & SQL
  • Set up permissions and import data
  • Test & refine processes
  • Establish requirements for intranet based GIS application & IMS site
  • Migrate users to new version later in the year
slide22
Questions?

Kay Anderson: [email protected]

701-241-5762

Kendis Scharenbroich: [email protected]

218-547-3374 x106

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