Theoretical Aspects of Schema Merging
For this class we'll be reading one paper:
This paper is very theory-oriented and could quite easily throw those
of you who are not theory-oriented. To successfully complete this
reading, be ready to write a good response and be prepared for a good
in class discussion, I suggest the following strategy:
- Generic Merge, day 1: Peter Buneman, Susan B. Davidson, Anthony
Kosky: Theoretical Aspects of Schema
Merging. EDBT 1992: 152-167. We are reading this paper to see the
theoretical perspective on schema merging.
- In section two, don't worry about the first numbered point until
you need it. Don't worry about points D1 and D2 at all.
- In all sections, replace all random letters with actual examples
that make sense to you. This is particularly true of section 2 (and a
good strategy in general).
- Pay close attention to the definition of merge as a "least upper
bound" on the bottom of page 155 and the top of page 156.
- Sections 4.1 through 6 are confusing. Don't sweat the details, but do
skim them. Especially try to understand why we need weak schemas.
- There's a string of typos; the first paragraph is approximately
backwards. Don't worry about it.
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