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programming language . The SPDE database was developed using Microsoft ' s SQL Server 2000 RDBMS , and was spatially-enabled using ESRI ' s ArcSDE 8 software . Case Study courtesy of bd Spatial (formerly GIS/Trans, Ltd. ) j 4 Case Study : Moricopa County, Arizona uses the following methods to integrate its street centerline layer: Another significant elections GIS application , and arguably one with the most impact on its internal work processes , is the integration of ArcView as an editor for the Recorder's Voter Registration System streets and boundaries tables . These tables store address ranges and alignments for streets and north-south-east-west address alignments for boundaries . The Voter Registration System uses the tables to code voters into the proper precinct and districts and to determine in which elections a voter is eligible to vote . Prior to 1999 , the department relied on hand-drawn graph paper representations of districts and printed reports of streets to determine how to manage these tables . This method had several shortcomings—the graphs were never to scale, frequently had to be redone due to annexations , and were difficult to draw and interpret correctly . At the end of 1999 , the department implemented an ArcView 3 application that models streets and boundaries and lets users actually see the relationship between the two . Although the database is only "faux" spatially enabled , the application enforces some topology rules in the tables . This application has easily saved hundreds of hours in maintaining and troubleshooting this critical piece of the system . Case Study courtesy of ESRI ArcUser Magazine St Formal GIS Training The IT director and Chief Deputy Supervisor should receive formal GIS training . This training will ensure that the needed GIS data is in place and that the future goals for GIS data creation and maintenance can be attained . More information on training opportunities can y be found in Chapter 8: GIS Training and Education . GIS Data Layer Inventory and Recommendations The following table describes the most important GIS layers for the Supervisor of Elections : Extract, cleanse , geocode , and map from address database; georeference Automated ; Community Address Points based on aerial Development/ Planning Recommended photography and GPS field work Aerial Photography Fly-over with control points Property Appraiser - GIS Existing 2004 and Mapping Census Data Download from Census Community Development Existing Bureau County Limits Acquire from Ordinance Property Appraiser - GIS Existing Information and Mapping City Limits Acquire from Ordinance Property Appraiser - GIS Existing Information and Mapping Parcels Acquired from tax records ; Property Appraiser - GIS Existing Cogo and Mapping 198 GIS Needs Assessment and Implementation Plan Chapter 1 - Departmental GIS Needs Assessment