Open Data
Open Data
Open Data
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Motivation – Keyword Search (2)<br />
Enabling casual users to query relational databases with keywords<br />
• “casual users”<br />
• Without any knowledge about the schema information<br />
• Without any knowledge of the query language (SQL)<br />
Search system should have the knowledge in behalf of users<br />
keywords SQL<br />
Relational<br />
<strong>Data</strong>bases<br />
Results<br />
Challenges<br />
• Inherent discrepancy of data between IR and DB<br />
• Information often splits across the tables (or tuples) in relational databases<br />
© Prof. Dr.-Ing. Wolfgang Lehner| Do-It-Yourself Analytics on <strong>Open</strong> <strong>Data</strong> 38
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