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GeoDataspace Bringing the dataspace vision to geodata. Matheus Silva Mota. http://lis.ic.unicamp.br. André Santanchè. Lab. of Information Systems. Contextualization. X. XML collection / XML database. Spreadsheets. Some Database. RDBMS A. RDBMS B. Contextualization. X.

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GeoDataspaceBringing the dataspacevision to geodata

Matheus Silva Mota

http://lis.ic.unicamp.br

André Santanchè

Lab. of Information Systems


Contextualization

X

XML collection /XML database

Spreadsheets

Some Database

RDBMS A

RDBMS B


Contextualization

X

Multitude of stand-alone sources

XML collection /XML database

Spreadsheets

Some Database

RDBMS A

RDBMS B


Data Integration

  • Two main currents:

  • Classical integration

  • ‘Pay-as-you-go’ integration

1975

2005

now


Classical Integration Strategy

X

Application

Meta-DBMS

Global Schema

RDBMS A

RDBMS B


Classical Data Integration

  • Problems

  • Heterogeneity -> Costly upfront schema mapping/alignment

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


‘Pay-as-you-go’ integration

  • Two main currents:

  • Classical integration

  • ‘Pay-as-you-go’ integration

1980

2005

now


Dataspace

X

Application

Introspect

<<access>>

Dataspace System

XML collection /XML database

RDBMS A

Spreadsheets

Document Database

RDBMS B


Example

Linked-data: A Global Dataspace


Contextualization

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

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


Contextualization

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

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


Contextualization

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

Datasets published following Linked Data ‘format’: 2008


Contextualization

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

Datasets published following Linked Data ‘format’: 2009


Contextualization

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

Datasets published following Linked Data ‘format’: 2010


Contextualization

Datasets published following Linked Data ‘format’: 2011


Contextualization

There is NO global schema

Datasets published following Linked Data ‘format’: 2011



Geodataspaces: Open Challenges


Thanks for your attention.

Questions?

MatheusMota

http://matheusmota.com

[email protected]

André Santanchè

http://www.ic.unicamp.br/~santanche

[email protected]

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


Geodataspaces: Open Challenges


Backupslides

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



LinkedScales - Overview







LinkedScales

Transversal Graph


Thanks for your attention.

Questions?

MatheusMota

http://matheusmota.com

[email protected]

André Santanchè

http://www.ic.unicamp.br/~santanche

[email protected]

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


Backupslides

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


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