1 Materi 6 Manajemen Basis Data dalam GIS Pre-Kuis • • •
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1
Materi 6
Manajemen Basis Data
dalam GIS
Pre-Kuis
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A Storage Hierarchy ...
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increasing complexity
Definitions
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A GIS can answer the question: What is where?
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A GIS links attribute and spatial data
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Types of DBMS Models
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Flat File or DBMS
Record Value Value Value
Attribute Attribute Attribute
Record Value Value Value
Record Value Value Value
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Database types - a history
Evolution of Database
technology
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Database Types - Hierarchical
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Database Types - Hierarchical
Hierarchical Structure for a Cadastral database
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Hierarchical Structure for a Cadastral database
Relational Databases rule now
2/1/98 2/4/98
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Database Types - Relational
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Database Types - Relational
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Database Types - Relational
Geographic Information System
Database Management
System
• Data loading • Editing • Visualization • Mapping • Analysis
• Storage • Indexing • Security • Query
Data
System Task
Role of DBMS
“Programmable API”
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Relational DBMS
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Table
Row = object
Vector feature
Column = Attribute
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Relational DBMS
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Relational Join
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Relational Databases
2/1/98 2/4/98
Parts of GIS database tables for U.S states
(A) STATES table; (B) POPULATION table
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Parts of GIS database tables for U.S states
(C) joined table—COMBINED STATES and POPULATION
Tax assessment database
(D) joined table
(C) data partially
normalized into three
subtables
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Centralised vs distributed
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GIS and distributed databases ...
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Approaches to GIS system design
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Approaches to GIS system design
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Software
linkages
(1) Separate Spatial and attribute data
(2) Integrated Spatial
and attribute data
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GIS databases … some problems
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