1

Mike Stonebraker’s Two Bullets

Michael Stonebraker

Adjunct Professor

Massachusetts Institute of Technology

(stonebraker@lcs.mit.edu)

2

M.I.T.

Bullet 1: Semantic HeterogeneityBullet 1: Semantic HeterogeneityBullet 1: Semantic HeterogeneityBullet 1: Semantic Heterogeneity

Achilles heel of data warehouse projectsAnd information integrationAnd soon of web services

Easy part is euros to/from dollarsHarder is French salary to/from U.S.

salaryHardest is latex gloves to/from rubber

hand protectors

Achilles heel of data warehouse projectsAnd information integrationAnd soon of web services

Easy part is euros to/from dollarsHarder is French salary to/from U.S.

salaryHardest is latex gloves to/from rubber

hand protectors

3

M.I.T.

Bullet 1: Semantic HeterogeneityBullet 1: Semantic HeterogeneityBullet 1: Semantic HeterogeneityBullet 1: Semantic Heterogeneity

Worked on ever since I have been an adultWith little progress

At some point we need to work on the

important stuff…..

Worked on ever since I have been an adultWith little progress

At some point we need to work on the

important stuff…..

4

M.I.T.

Bullet 2: Google for Structured Data Bullet 2: Google for Structured Data Bullet 2: Google for Structured Data Bullet 2: Google for Structured Data

What is the current temperature in Lowell?Is Flight 214 on time?Where can I buy pocket protectors?

What is the current temperature in Lowell?Is Flight 214 on time?Where can I buy pocket protectors?

5

M.I.T.

Bullet 2: Google for Structured Data Bullet 2: Google for Structured Data Bullet 2: Google for Structured Data Bullet 2: Google for Structured Data

Data modelNot likely to be text

Query languageNL doesn’t work (and won’t anytime

soon)Integration of 10** 6 sites

Semantic heterogeneity……Site finding --UDDI is a startScalability -- 10**6 gateways?

Data modelNot likely to be text

Query languageNL doesn’t work (and won’t anytime

soon)Integration of 10** 6 sites

Semantic heterogeneity……Site finding --UDDI is a startScalability -- 10**6 gateways?