Integration Points for Property Tax, CAMA, & GIS
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Transcript of Integration Points for Property Tax, CAMA, & GIS
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Integration Points for Property Tax, CAMA, & GIS
Jason A. CromeVice President of Software Development, DEVNET, Inc.
2013 Nebraska GIS/LIS Biennial SymposiumApril 16, 2013
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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
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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
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Areas of Integration• Property Tax
• CAMA
• Sketching
• GIS
• Imaging
• Pictometry
• E911
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Integration Overview
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Building the Interface
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Options
• Use Esri APIs
• Use existing county GIS applications
• Do something else (!!!)
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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
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Interface Options
• Pass parcels through URL
• Exchange parcel data through shared database table(s)
• Web Services
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Pass Parcels through URL
• Advantages: Easy to implement
• Disadvantages: slow, breaks down for large result sets (unexpected truncation of URLs)
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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?)
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XML Web Services
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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)
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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
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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
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Workflow
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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
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How?
• Have direct read access into county geodatabase
• County tells us where to find the data we care about
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Desktop Integration Points
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Viewing a Parcel
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Viewing Ag Land
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Viewing Pictometry
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Sketching
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Imaging
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Search Results
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Putting It All Together...
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...on Multiple Monitors!
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Other Desktop Integration Points
• Comparable Properties
• Ratio Studies
• Neighborhoods
• ....Anywhere we have a list of parcels
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Other Desktop Integration Points (cont.)
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Web Integration Points
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Viewing a Parcel
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Viewing Ag Land
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Images
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Appraisal/Sketches
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Search Results
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Demo!!!
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Questions?