1. FUNCTIONAL DEPENDENCIES 2. Definition • Let R be the relation, and let x and y be the arbitrary subset of the set of attributes of R. Then we say that Y is functionally…
FUNCTIONAL DEPENDENCIES CSC343 Functional Dependencies Functional Dependencies Examples: PERSON Relation PERSON SIN NAME CITY 123 Laurent Toronto 324 Bill Toronto 574 Bill…
Query optimization in distributed database systems Framework for query optimization The selection of a query processing strategy involves: ± determining the physical copies…
1. Relational Algebra Edited by Aryati Bakri 2. Objectives Meaning of the term relational completeness. How to form queries in relational algebra. Categories of relational…
Slide 11 Lecture 7 Design Theory for Relational Databases (part 1) Slides based on http://infolab.stanford.edu/~ullman/fcdb/aut07/index.html#lecturehttp://infolab.stanford.edu/~ullman/fcdb/aut07/index.html#lecture…