Extending to Hierarchical Structures

• Data-as-conjunctive-constraints still works?

• Constraint = Path-Value Pair (vs. Attribute-Value).

  • E.g., [reference.date.year 1998]
  • E.g., [reference.authors ?]

id

title

authors

inst

date

CG98

Constraint ...

Stanford

Univ

.

kws

reference

name[1]

name[2]

lname

fname

lname

fname

year

month

term[1]

term[2]

Chang

Kevin

Garcia-

Molina

Hector

January

1998

Query ...

Data ...

tr-no

SIDL-...

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