Search Tien-Dung Le Quentin Tremerie David Massart (European Schoolnet)

Contents Summary on protocols Query languages Typical questions Implementation

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

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.)

OAI-PMH & SQI :

(DC, lom , ilox)

OAI

Query by set or timeframe

SQI

Query language

Query languages LRE-QL ( based on CQL ) SQL it soo much DB oriented

LRE-QL ( based on CQL )

SQL it soo much DB oriented

Typical questions Who searches What options do we offer for search

Who searches

What options do we offer for search

Technical architecture for content sharing Harvesting: OAI-PMH Federated Search: SQI

Automatic Translation

Implementations Databases Relational XML Lucene Custom  Choose the best according to the needs and expected usage

Databases

Relational

XML

Lucene

Custom

 Choose the best according to the needs and expected usage

Any questions ?