Call Girls Alandi Road Call Me 7737669865 Budget Friendly No Advance Booking
GIS Data Models Explained
1. September 2012
GIS Data Models Explained
A look at GIS data models
and their functions.
GULF INTERSTATE ENGINEERING COMPANY
16010 BARKERS POINT LANE
SUITE 600
HOUSTON, TEXAS 77079 USA
(713) 850-3400
6. • What is a data model?
– A data model defines structured data for
storage in Database Management Systems
(DBMS).
• Are there pipeline related data models?
6
11. • APDM
– Key Notes
• Expressly designed for Esri GIS software
• Relational, hierarchal, GIS data model
– However, it uses Esri database types to
differentiate “domains” from relationships.
• Spatially enabled
• No GUIDs
11
Notes de l'éditeur
Enterprisevs Personal: Accessibility, Security, Size (PGDB 2 GB, SQL Express 4 GB, SQL & Oracle Enterprise limitless)Storage: Indexes (100 files but only 10 used)Structure: Data Model (how data is stored)
GIS neutral = Not just Esri but any GIS applicationFlat = non-spatial
ISPDM – industry standard pipeline data management systemISAT – integrated spatial analysis techniques
Logical – generic blue printPhysical – detailed structure designData dictionary – document that defines the structure