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GeoDataspace Bringing the dataspace vision to geodata

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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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slide1

GeoDataspaceBringing the dataspacevision to geodata

Matheus Silva Mota

http://lis.ic.unicamp.br

André Santanchè

Lab. of Information Systems

slide2

Contextualization

X

XML collection /XML database

Spreadsheets

Some Database

RDBMS A

RDBMS B

slide3

Contextualization

X

Multitude of stand-alone sources

XML collection /XML database

Spreadsheets

Some Database

RDBMS A

RDBMS B

slide4

Data Integration

  • Two main currents:
  • Classical integration
  • ‘Pay-as-you-go’ integration

1975

2005

now

slide5

Classical Integration Strategy

X

Application

Meta-DBMS

Global Schema

RDBMS A

RDBMS B

slide6

Classical Data Integration

  • Problems
  • Heterogeneity -> Costly upfront schema mapping/alignment
  • Explosion of sources - > Maintain a Global Schema is VERY HARD!
slide7

‘Pay-as-you-go’ integration

  • Two main currents:
  • Classical integration
  • ‘Pay-as-you-go’ integration

1980

2005

now

slide8

Dataspace

X

Application

Introspect

<<access>>

Dataspace System

XML collection /XML database

RDBMS A

Spreadsheets

Document Database

RDBMS B

slide9

Example

Linked-data: A Global Dataspace

slide10

Contextualization

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

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

slide11

Contextualization

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

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

slide12

Contextualization

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

Datasets published following Linked Data ‘format’: 2008

slide13

Contextualization

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

Datasets published following Linked Data ‘format’: 2009

slide14

Contextualization

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

Datasets published following Linked Data ‘format’: 2010

slide15

Contextualization

Datasets published following Linked Data ‘format’: 2011

slide16

Contextualization

There is NO global schema

Datasets published following Linked Data ‘format’: 2011

slide19

Thanks for your attention.

Questions?

MatheusMota

http://matheusmota.com

mota@ic.unicamp.br

André Santanchè

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

santanche@ic.unicamp.br

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

slide21

Backupslides

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

slide29

LinkedScales

Transversal Graph

slide30

Thanks for your attention.

Questions?

MatheusMota

http://matheusmota.com

mota@ic.unicamp.br

André Santanchè

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

santanche@ic.unicamp.br

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

slide31

Backupslides

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