Data-driven understanding and refinement of schema mappings

Data-Driven Understanding and Refinement of
Schema Mappings
Laura M. Haas
Ronald Fagin
Ling Ling Yan
Renée J. Miller
IBM
Almaden
Univ.
Toronto
IBM
Almaden
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ABSTRACT
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1. INTRODUCTION
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—  }˜"™
Permission to make digital or hard copies of all or part of this work for
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permission and/or a fee.
ACM SIGMOD 2001 May 21-24, Santa Barbara, California, USA
Copyright 2001 ACM 1-58113-332-4/01/05 ... 5.00.
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Children
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name
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mid
fid
docid
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ID
name
affiliation
salary
TARGET
m
v2
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ID
location
time
age
mid
fid
Kyle
2
201
202
701
002
Maya
4
203
204
702
003
Eric
5
205
206
703
ID
name
affiliation
v3
BusSchedule
docid
(b)
Kids
contactPh
ID
name
affiliation
contactPh
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FamilyIncome
v4
001
PhoneDir
ID
type
number
SBPS
Children
name
001
ID
m
v1
Maya
Maya
003
Eric
...
v5
(a)
Kyle
002
...
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Parents
Scenario 1
Children
name age mid fid
ID
001
Kids
name affiliation ...
ID
002 Maya
4
203 204 702
204 Mike
205 Sue
NASA
MGM
003
5
205 206 703
206 Joe
CISCO
Eric
Scenario 2
Kyle
002 Maya
Eric
003
ID
201 Anne Safeway
name age mid fid
2
201 202 701
4
5
203
001
IBM
202 Paul
docid
Kyle
Eric
IBM
NASA
CISCO
Kids
name affiliation ...
ID
001
003
Parents
Children
name affiliation ....
002 Maya
Xerox
201 202 701
Kyle
001
IBM
202 Paul
203 Jill
docid
2
ID
ID
201 Anne Safeway
Jill
name affiliation ....
Kyle
IBM
002 Maya
Xerox
203 204 702
204 Mike
205 Sue
NASA
MGM
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206 Joe
CISCO
003
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Xerox
CISCO
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Kids
Scenario 1
ID
affiliation
Kyle
IBM
202-0001
Kyle
IBM
202-0002
002
Maya
003
Eric
NASA
204-0001
CISCO
206-0001
PhoneDIr
Parents
Children
ID
name
age
mid
docid
fid
ID
201-0001
Xerox
202 Work
202 Cell
202-0001
202-0002
NASA
MGM
203 Home
203-0001
203
204 Work
203-0002
204-0001
205 Work
206 Work
205-0001
206-0001
Kyle
2
201 202 701
002
Maya
4
203 204 702
202 Paul
003
Eric
5
205 206 703
Jill
204 Mike
205 Sue
206
Scenario 2
name affiliation contactPh
001
Kyle
IBM
201-0001
Maya
NASA
203-0001
003
003
name age mid fid
Eric
Eric
NASA
203-0002
CISCO
205-0001
Parents
Children
Kyle
CISCO
002
002 Maya
002 Maya
IBM
Cell
Kids
ID
001
Joe
number
type
201 Home
001
203
ID
name affiliation
201 Anne Safeway
ID
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contactPh
name
001
001
docid
ID
2
201 202 701
4
203 204 702
202 Paul
5
205 206 703
Jill
PhoneDIr
Parents2
name affiliation
201 Anne Safeway
203
....
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ID
name affiliation
201 Anne Safeway
202 Paul
Jill
IBM
Xerox
203
204 Mike
205 Sue
NASA
MGM
204 Mike
205 Sue
NASA
MGM
Xerox
206 Joe
CISCO
206 Joe
CISCO
ID
type
number
201 Home
201-0001
202 Work
202 Cell
202-0001
202-0002
203 Home
203-0001
203 Cell
204 Work
203-0002
204-0001
205 Work
206 Work
205-0001
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3. MAPPINGS
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Scenario 1
ID
001
002 Maya
003
SBPS
name age mid fid
Kyle
Eric
Scenario 3
Scenario 2
Children
2
4
5
docid
201 202 701
203 204 702
205 206 703
XmaxBox
Children
XmasBox
Children
give
ID
002
location
003 112 Lean Ave
005
time
364 Spode Way MW
MF
255 Bailey Ave TWF
ID
001
name age mid fid
Kyle
002 Maya
003
Eric
2
docid
201 202 701
give
receive
ID
001
003
001
name age mid fid
Kyle
4
203 204 702
002
004
002 Maya
5
205 206 703
003
002
003
Eric
docid
2
201 202 701
4
203 204 702
5
205 206 703
receive
001
003
002
004
003
002
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9. REFERENCES
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