GIS Maintenance & Tips Jennifer Kuchar

Maintenance is often the bottleneck of the entire GIS Enterprise Parcel Data AssessorRecorderAuditorSurveyor Planning & Zoning E911 Who is responsible for maintenance? There are several possible configurations!

Database Design and Infrastructure Preparation: Understand the current workflow – Take an inventory of documents – Make diagrams : Entity-Relationship & Network Critique – Ways to improve efficiency – Communication Decisions – Make a plan and designate a coordinator – Set Goals and a Timeline Implementation – Contingency Plan – Training Aftermath – Analysis – Maps

Maintenance Tips Use the Geodatabase Model – Central Storage – Feature Datasets Reduce the number of GIS layers “actively” maintained – relationships, domains, and subtypes Integrate the Tax/CAMA systems with the GIS Utilize the customization abilities in ArcGIS to create routines or tools that minimize steps – Model Builder

Spatial Relational Database Management Systems RDBMS Types of data – Numeric – Text – Yes/no – Date Very Powerful – The “glue” of the GIS Precinct Landuse PIN Planning PIN Agriculture Assessment PIN Zoning Address Zoning Assessment

Geodatabase Rules Domains: acceptable values – Range – Coded Values Subtypes: classification of features within feature class Relationship Classes: defines a set of valid associations between two feature classes or tables

Domains Created in Geodatabase or through ArcToolbox Add the Coded value or Range of values Associate Domain to a feature class 570Parcel Number Point Parcel Number Point Parcel Number Point Parcel Number Condo Parcel Number Condo Parcel Number Condo 50

Subtypes One Feature Class – Subtype associated to FC field Working with subsets – substitutions Default subtype Annotation Tools in Arc

Relationship Classes

Tag Data Model Coincident Geographic Features – The solution is Multiple Feature Tagging 214Lot 214Parcel 214ROW 214Subdivision OID Tag Alpha Tag ProblemSolution Cadastral Feature Class Parcel ROW Lot Subdivision Table 1 to Many Relationship

One Base File Many New Layers

One Parcel… Many Attributes Description Acreage Deed Plat Imp. Value Land Value Parcel Number Description Landuse Building Characteristics Agriculture Parcel Number Picture Tax Appraisal Join, Relate, or View PIN =

Integration with Tax/CAMA Systems

Workflow Draw Boundaries Enter Core Parcel Data Once Build Feature Classes Publish Maps Complete CAMA Data Entry Roll Data to Tax Administration

Thank-you for your time Jennifer Kuchar Project Manager The Sidwell Company 675 Sidwell Court St. Charles, Illinois phone: (630) fax: (630) website: