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a base map layer needs to be eliminated, in order to mitigate the duplication of efforts and <br /> reduce the potential for errors, disparities, and inconsistencies . <br /> Upon completion of the proposed rectification of the " master" tax parcel layer maintained <br /> ` by the Property Appraiser' s Office , it is recommended that the GIS Director, County Surveyor, <br /> and GIS Mapping Coordinator collaborate on the consolidation of any department-specific <br /> data with the new master fax parcel layer. There are several options for doing this , including <br /> the utilization of look-up tables , inclusion of additional attributes in the master layer with user- <br /> defined filters or views , and automated extraction of data subsets on a regularly scheduled <br /> basis . <br /> Upon consolidation of any additional data /features with the County ' s master tax parcel <br /> layer, it is recommended that the GIS Director, County Surveyor, and GIS Mapping <br /> Coordinator collaborate on establishing an appropriate strategy for dissemination of the tax <br /> parcel layer to all County departments and offices . Based on existing utilization of ArcSDE for <br /> management and maintenance of the layer, there is an opportunity for leveraging this <br /> environment as a central repository for the County ' s base map layers . <br /> Depending on network configuration and performance , it may be necessary to provide <br /> derivative copies of the data in other formats i .e. , Shapefile) to County departments and <br /> offices—however, great care should be taken to establish a protocol and process that <br /> ensures that any edits or modifications are made to the master layer. The GIS Director will be <br /> tasked with establishing any protocols and /or processes needed for this purpose . <br /> 3. Implementation of Standards for All Geo-Soafial Data <br /> Another critical issue in the County ' s GIS efforts is the implementation of geo-spatial data <br /> standards . Using a common standard will enable the County to operate more efficiently by <br /> - reducing data conversion and by enabling streamlined data distribution internally and <br /> externally. <br /> The County will need to develop geo-spatial data standards , including layer and directory <br /> naming conventions , directory structures , metadata , and index conventions . It should be <br /> noted that these standards do not apply solely to parcel data and its derivative products , <br /> but rather that these standards will apply and support all enterprise geo-spatial data . <br /> 4-4 <br /> GIS Needs Assessment and Implementation Plan Chapter 4 - Base Map Creation and Consideration <br />