82
P.A. Bernstein, S. Melnik: Meta Data Management, ICDE'04 Boston
Schema Matching Approaches
lMany good ideas
ØRahm & Bernstein, VLDB J, Dec ’01
Individual matchers
Schema-based
Content-based
•Graph matching
Linguistic
Constraint-based
Structural
Per-Element
•Types
•Keys
•Value pattern  
  and ranges
Constraint-based
Linguistic
•IR (word frequencies, key terms)
Per-Element
Constraint-based
•Names
•Descriptions
lBut none are robust ® combine ideas