96
P.A. Bernstein, S. Melnik: Meta Data Management, ICDE'04 Boston
Merge(M1, M2, map)
l[Buneman, Davidson, Kosky, EDBT 92]
ØMeta-model has aggregation & generalization only
ØUnion, and collapse objects having the same name
ØFix-up step for inconsistencies created by merging
Y
X
a
Z
X
a
Y
X
Z
W
a
Y
X
Z
a
a
ØSuccessive fixups lead to different results L
ØBatch them at the end, to get a unique minimal result
ØNow enrich the meta-model (containment, complex mappings, …) & merge semantics (conflicts, deletes)
Could cut if I’m short on time.