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malleable schemas: a preliminary report

Domain Modeling in Data Integration is Hard. Clean Schema. Structured datasources. Unstructured datasources. ?. Real-Estate Website I. Single Family HomeCondo/Town house/Co-opMulti-Family HomeMfd /Mobile HomeLandFarmsRentals. . Real-Estate Website II. Condo /TownhouseForeclosuresLots/LandMobile HomeMulti-Family DwellingOtherSingle Family HomesTimeshares.

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malleable schemas: a preliminary report

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    1. Malleable Schemas:A Preliminary Report Xin (Luna) Dong and Alon Halevy @ WebDB 2005 June 17, 2005

    3. Real-Estate Website I Single Family Home Condo/Townhouse/Co-op Multi-Family Home Mfd/Mobile Home Land Farms Rentals

    4. Real-Estate Website II Condo/Townhouse Foreclosures Lots/Land Mobile Home Multi-Family Dwelling Other Single Family Homes Timeshares

    5. Real-Estate Website III Acreage/Semi-Rural Alpine Apartment Apt/Unit/Flat Block of Units Duplex/Semi-detached Flat House Retirement Living Serviced Apartment Studio Terrace Townhouse Unit Villa Warehouse

    6. Real-Estate Websites Single Family Home Condo/Townhouse/Co-op Multi-Family Home Mfd/Mobile Home Land Farms Rentals

    7. Real-Estate Websites Single Family Home Condo/Townhouse/Co-op Multi-Family Home Mfd/Mobile Home Land Farms Rentals

    8. Real-Estate Websites Single Family Home Condo/Townhouse/Co-op Multi-Family Home Mfd/Mobile Home Land Farms Rentals

    9. Real-Estate Websites Single Family Home Condo/Townhouse/Co-op Multi-Family Home Mfd/Mobile Home Land Farms Rentals

    10. Malleable Schemas

    11. Malleable Schemas are Needed in Many Cases The structure is inherently evolving The domain is extremely complicated Domain structure is not completely known The borders between structured and unstructured parts of data are fuzzy Modeling every detail is too overwhelming and impractical

    12. Main Ideas in Malleable Schemas (I) Malleable elements in Schema Definition Use keywords or phrases as element names Allow regular expressions as element names Examples ShortTermRental, VacationRental RealEstate rentalClerk, *agent contactPerson

    13. Main Ideas in Malleable Schemas (II) Imprecise Reference in Query SELECT city, price, ~leaseAgent FROM ~ShortTermRental WHERE location = “Tahoe”

    14. Malleable Schemas:A Preliminary Report Xin (Luna) Dong and Alon Halevy @ WebDB 2005 http://www.cs.washington.edu/homes/lunadong

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