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TRIO
Data Uncertainty Lineage
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Data Model Query Language System
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Data Model ULDBs

• Alternatives and ?
• Confidence values
• Lineage

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?
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Query Language TriQL

• SQL over uncertain data with lineage
• New features for querying alternatives,
• ?s, confidences, and lineage
• Conf(), Maybe(), Lineage()
• Horizontal subqueries
• On-demand lineage tracing and confidence
  computation
• Query-defined confidences
• Extraneous data detection

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System Trio-One
TrioExplorer (GUI client)
Command-line client
Trio API and translator (Python)
Standard SQL
Standard relational DBMS
Trio Metadata
Encoded Data Tables
Trio Stored Procedures (SPI/C)
Lineage Tables
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Please Try It!

• Search stanford trio
• Look for the links
• Create and query your own Trio database