Information Integration. Mediators Warehousing Answering Queries Using Views. Example Applications. Enterprise Information Integration: making separate DB’s, all owned by one company, work together. Scientific DB’s, e.g., genome DB’s.
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Answering Queries Using Views
V1(c,p) <- par(c,p)
V2(c,g) <- par(c,p) AND par(p,g)
ggp(c,x) <- par(c,u) AND par(u,v) AND
Sol1(c,x) <- V1(c,u) AND V1(u,v) AND
Sol2(c,x) <- V1(c,u) AND V2(u,x)
Sol3(c,x) <- V2(c,v) AND V1(v,x)