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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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9

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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15

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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27

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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Tugas

Tugas Akhir

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