geodataspace bringing the dataspace vision to geodata
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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://[email protected]
André Santanchèhttp://www.ic.unicamp.br/~santanche
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://[email protected]
André Santanchèhttp://www.ic.unicamp.br/~santanche
Backupslides
http://www.lis.ic.unicamp.br