Search

Tien-Dung Le

Quentin Tremerie

David Massart

(European Schoolnet)

Contents

• Summary on protocols

• Query languages

• Typical questions

• Implementation

Protocols Summary

• Protocols we have seen

• OAI-PMH

• Gathering large sets of data from external targets, at ‘regular’ intervals

• SQI

• Send queries to external targets

• OAI-PMH & SQI :

• (DC, lom , ilox)

• OAI

• Query by set or timeframe

• SQI

• Query language

Protocols Summary (cont.)

Query languages

• LRE-QL ( based on CQL )

• SQL it soo much DB oriented

Typical questions

• Who searches

• What options do we offer for search

Technical architecture for content sharing

OAI - PMH

EUNHarvested metadata

OAI - PMH

ScoilnetIreland MoE

SQI

Public LRE portal

eTwinning portal

Irish classroom

AriadneHarvested metadata

INDIRE

CambridgeHitachi

MoEAustria

Harvesting: OAI-PMHFederated Search: SQI

Automatic Translation

Implementations

• Databases

• Relational

• XML

• Lucene

• Custom

Choose the best according to the needs and expected usage

Any questions ?