SELECT
on a raw CSV File- State of the art: External Table Defn + "Manually" edit CSV +
+ State of the art: External Table Defn + "Manually" edit CSV
UNION
two data sources+
State of the art: Manually map schema
SELECT
on JSON or a Doc Store{ A: "Bob", B: "Alice" }
)+
State of the art: DataGuide, Wrangler, etc...
Alice spends weeks cleaning her data before using it.
- Incomplete and Probabilistic +
+ Incomplete and Probabilistic Databases
have existed since the 1980s