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Hang Yue , Graduate Research Assistant Elizabeth G. Jones, Ph.D., Associate Professor

UNIVERSITY OF NEBRASKA-LINCOLN. Archiving Capability of Spatio -temporal Data in Different Highway Railroad Grade Crossings Databases. Hang Yue , Graduate Research Assistant Elizabeth G. Jones, Ph.D., Associate Professor University of Nebraska-Lincoln.

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Hang Yue , Graduate Research Assistant Elizabeth G. Jones, Ph.D., Associate Professor

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  1. UNIVERSITY OF NEBRASKA-LINCOLN Archiving Capability of Spatio-temporal Data in Different Highway Railroad Grade Crossings Databases Hang Yue, Graduate Research Assistant Elizabeth G. Jones, Ph.D., Associate Professor University of Nebraska-Lincoln

  2. UNIVERSITY OF NEBRASKA-LINCOLN Relational Databases • Strengths • Widely used • Powerful tools • Limitations • Limited ability to capture spatial relationships • Time must be represented in a discontinuous way UNL HRGC Relational Database Representation

  3. UNIVERSITY OF NEBRASKA-LINCOLN GIS Spatial Databases • Strength • Combine time with traffic attributes and continuous spatial data • Limitation • Time is also discontinuous in GIS UNL HRGC Geo-spatial Database Representation

  4. UNIVERSITY OF NEBRASKA-LINCOLN Constraint Databases • Strengths • Time-dependent, multi-dimensional, relative space • Dynamic view of multiple data elements • Limitation • Models of geographic elements (due to current software limitations) UNL HRGC Constraint Database Representation

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