ArcGIS Data Models PDF
Preview ArcGIS Data Models
AArrccGGIISS DDaattaa MMooddeellss:: RRaasstteerr DDaattaa MMooddeellss JJaassoonn WWiilllliissoonn,, SSiimmoonn WWoooo,, QQiiaann LLiiuu ((TTeeaamm RRaasstteerr,, EESSRRII SSooffttwwaarree PPrroodduuccttss)) Overview of Session • Raster Data Model Context • Example Raster Data Models • Important Raster GDB Considerations • Rasters in ArcGIS 9.0 Questions / Answers / Comments Sample Database and Design Documents For more information, go to http://support.esri.com/datamodels What is a Data Model? “A practical template for implementing GIS solutions” • Built on consensus within a discipline – Both providers and users • Goal is consistency across organizations • Great starting points • Designed to adhere to emerging standards Why Data Models? • Data models provide… – “Quick Start" solutions – Best practices • Optimized performance – Improves data sharing – More successful GIS implementations • The ArcGIS geodatabase architecture allows… – Ready-to-use frameworks – Centralized location – Intelligence/Rules Raster Data Model Context • Raster Data Models • Essential parts of other data models • Just another layer in your data model stacks • Base-mapping and/or Analysis needs • ESRI’s Geodatabase Raster Solution • Enterprise or personal geodatabase • We will focus on enterprise (ArcSDE) • Easy to build specifically to meet your needs Raster Data Model Context Demonstration Where do I start? • Determine… – The purpose of my raster data – Your application’s scale of use – The properties of the raster data • All this contributes to your database design – Use these guidelines to optimize your solution Types of Geodatabase Rasters • Raster Dataset – Storage of a single raster dataset – Mosaic many inputs to one continuous raster dataset • Raster Catalog – Container of independent raster datasets – Organized as one entity in the database • Raster Attributes of a Feature Class – Feature class attribute – Stored in the geodatabase Raster Datasets Input files Geodatabase Raster Dataset 3712a.tif 3712b.tif UC2004.IMAGE_3712 3712c.tif 3712d.tif • Single geodatabase raster dataset created from multiple data sources – Single row table in the geodatabase – Overlapping pixels have options (overwrite, ignore, blend, min, max) – Use for DEMs, most base-mapping, and where fast viewing at any scale is important
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