GPHY384, Lecture's 25&26
GPHY384, Lecture's 25&26 GPHY 384
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This 2 page Class Notes was uploaded by Sarah Massar on Monday April 25, 2016. The Class Notes belongs to GPHY 384 at Montana State University taught by Stuart Challenger in Fall 2015. Since its upload, it has received 13 views. For similar materials see Advanced GIS and Spatial Analysis in Earth Sciences at Montana State University.
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Date Created: 04/25/16
GPHY384 Lecture 23/24 4/19&21 Lecture 25 4/19 DATABASES Expanded Cardinality: 0, 1:1- zero or one TO one 1:1… many- one To one to many 1:0… 5- one To zero to 5 -Could use the extended cardinality or stick to 1:1, 1:m, or m:m -Discussed the quiz due Tuesday April 26 th Lecture 26 4/21 OBJECT-ORIENTED (OO) DATABASE CONCEPTS -in the past there were limitations to databases by only being able to store points, lines, and polygons -defining relationship were cumbersome -no support of special types of behavior -Then Object Oriented Databases came to the rescue! +Object Oriented: -smart features with natural behaviors -a road will only cross a stream at a bridge -custom behaviors are implemented naturally -domains, topology -feature and attributes on the same table -interactions between objects can be managed +Versioning- simultaneous editing - So if 10 people working on a project, their edits will all automatically show on everyone’s computer in relation to the data +Geodatabase- esri’s version of an object oriented database
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