Summary: Structures, Semantics and
Statistics
Alon Halevy
University of Washington, Seattle
VLDB, September 1, 2004
Abstractions `R Us
Logical vs. Physical; What vs. How.
SSN Name Category
123-45-6789 Charles undergrad
234-56-7890 Dan grad
... ...
SSN CID
123-45-6789 CSE444
123-45-6789 CSE444
234-56-7890 CSE142
...
Students: Takes:
CID Name Quarter
CSE444 Databases fall
CSE541 Operating systems winter

Source: Anderson, Richard - Department of Computer Science and Engineering, University of Washington at Seattle

Collections: Computer Technologies and Information Sciences