geodataspace bringing the dataspace vision to geodata

GeoDataspaceBringing the dataspace vision to geodata

http://lis.ic.unicamp.brLab. of Information Systems

Matheus Silva MotaAndré Santanchè

2

RDBMS BXML collection /XML database

SpreadsheetsRDBMS A

Contextualization

Some Database

X

Some Database

3

RDBMS BXML collection /XML database

SpreadsheetsRDBMS A

Contextualization

Multitude of stand-alone sources

X

Two main currents:

• Classical integration

• ‘Pay-as-you-go’ integration

Data Integration

1975 now2005

5

RDBMS B

Classical Integration Strategy

Application

lat long cidadeLA LG

latitude longitude city_name

Global Schema

RDBMS A

Meta-DBMSX

Classical Data Integration

Problems• Heterogeneity -> Costly upfront schema mapping/alignment

• Explosion of sources - > Maintain a Global Schema is VERY HARD!

Two main currents:

• Classical integration

• ‘Pay-as-you-go’ integration

‘Pay-as-you-go’ integration

1980 now2005

8

RDBMS B Document DatabaseXML collection /XML database SpreadsheetsRDBMS A

Dataspace System

Dataspace

Application

<<access>> Introspect

X

ExampleLinked-data: A Global Dataspace

Contextualization

Datasets published following Linked Data ‘format’: 05/2007

Source: http://lod-cloud.net/

Contextualization

Datasets published following Linked Data ‘format’: 11/2007

Source: http://lod-cloud.net/

Contextualization

Datasets published following Linked Data ‘format’: 2008

Source: http://lod-cloud.net/

Contextualization

Datasets published following Linked Data ‘format’: 2009

Source: http://lod-cloud.net/

Contextualization

Datasets published following Linked Data ‘format’: 2010

Source: http://lod-cloud.net/

Contextualization

Datasets published following Linked Data ‘format’: 2011

Contextualization

Datasets published following Linked Data ‘format’: 2011

There is NO global schema

Geodataspace

GeoDataspaceData Model

Improvement Strategies

Content Introspect Query/Index

Operations

DS Architecture

Geodataspaces: Open Challenges

Thanks for your attention.Questions?

http://www.lis.ic.unicamp.br

Matheus Mota

http://matheusmota.commota@ic.unicamp.br

André Santanchèhttp://www.ic.unicamp.br/~santanche

santanche@ic.unicamp.br

GeoDataspaceData Model

Improvement Strategies

Content Introspect Query/Index

Operations

DS Architecture

Geodataspaces: Open Challenges

Backupslides

http://www.lis.ic.unicamp.br

22

Just Another Proposal: LinkedScales

23

LinkedScales - Overview

24

LinkedScales

25

LinkedScales

26

LinkedScales

27

LinkedScales

28

LinkedScales

29

LinkedScales

Tran

sver

sal G

raph

Thanks for your attention.Questions?

http://www.lis.ic.unicamp.br

Matheus Mota

http://matheusmota.commota@ic.unicamp.br

André Santanchèhttp://www.ic.unicamp.br/~santanche

santanche@ic.unicamp.br

Backupslides

http://www.lis.ic.unicamp.br