Languages
Pages
Legal
Integration Points for Property Tax, CAMA, & GIS
Jason A. CromeVice President of Software Development, DEVNET, Inc.
2013 Nebraska GIS/LIS Biennial SymposiumApril 16, 2013
Project Overview
• Sarpy County enters contract with DEVNET to modernize Property Tax and CAMA software in Fall 2012
• Project aims to improve tax cycle efficiency through automation, integration, and improved workflow
Integration Goals• Make property tax data, CAMA data, and GIS
available to the user through a single application
• Reduce duplicate work where possible
• Visualize property tax and CAMA data in meaningful ways.
• Make it easy for non-technical users to produce complex maps in GIS
Areas of Integration• Property Tax
• CAMA
• Sketching
• GIS
• Imaging
• Pictometry
• E911
Integration Overview
Building the Interface
Options
• Use Esri APIs
• Use existing county GIS applications
• Do something else (!!!)
Use County Apps
• Faster time to production
• Browser-based; easy to embed
• County users already familiar with them
• Cooperative county GIS department makes this easy and attractive
Interface Options
• Pass parcels through URL
• Exchange parcel data through shared database table(s)
• Web Services
Pass Parcels through URL
• Advantages: Easy to implement
• Disadvantages: slow, breaks down for large result sets (unexpected truncation of URLs)
Web Services
• Advantages: well-accepted, well-documented, lots of good tools for creating/consuming
• Disadvantages: lots of crappy tools for creating/consuming, sometimes slow, sometimes quirky, often verbose (XML, anyone?)
XML Web Services
Shared Database Table
• Advantages: easy to implement, fast set-based operations, builds cooperation and trust between IT staff and vendor(s)
• Disadvantages: need cooperation and trust between IT staff and vendor(s)
Implementation
• Simple table containing a unique ID, session ID, and parcel number
• Tax/CAMA apps always fill table with session ID and parcel(s) we want to map
• Action-specific URL called with session ID
• GIS looks into table with session ID and generates desired map
Implementation (cont.)
• When we want map to drive tax/CAMA, call GIS with session ID and blank table
• After action performed in GIS, table filled with parcels and session ID
• Event triggered in tax/CAMA, reads table contents, responds appropriately
Workflow
Splits, Combines, etc.
• Parcels split/combined in GIS first
• Addressed in E911
• By the time it gets to us, can import site address, legal description, acreage, soil data
How?
• Have direct read access into county geodatabase
• County tells us where to find the data we care about
Desktop Integration Points
Viewing a Parcel
Viewing Ag Land
Viewing Pictometry
Sketching
Imaging
Search Results
Putting It All Together...
...on Multiple Monitors!
Other Desktop Integration Points
• Comparable Properties
• Ratio Studies
• Neighborhoods
• ....Anywhere we have a list of parcels
Other Desktop Integration Points (cont.)
Web Integration Points
Viewing a Parcel
Viewing Ag Land
Images
Appraisal/Sketches
Search Results
Demo!!!
Questions?
Top Related