Slide 1COMP 5138 Relational Database Management Systems Semester 2, 2007 Lecture 5A Relational Algebra Slide 2 22 L3 Relational Data Model Overview There are many tasks that…
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Inspector Joins By Shimin Chen, Anastassia Ailamaki, Phillip, and Todd C. Mowry VLDB 2005 Rammohan Narendula Introduction Query execution is I/O bound- so most of the research…
Relational Algebra and My SQL Prof. Sin Min Lee Deparment of Computer Science San Jose State University Functional Dependency For all t1, t2 element of R if t1[A] = t2[A]…
Inspector Joins Shimin Chen Phillip B. Gibbons Todd C. Mowry Anastassia Ailamaki 2 1,2 1 1 1 Exploiting Information about Data Ability to improve query depends on information…
Query Optimization March 10th, 2003 Very Big Picture A query execution plan is a program. There are many of them. The optimizer is trying to chose a good one. Hence, the…
Techniques for Manipulating Relational Data By Herbert A. Evans Definition Terms DDL (data definition language) - of a relational system is used to define the database’s…