Solution Key #3
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CS375 2010 Fall Solution Key #3
1. Given F = cfw_AB -> C, C -> B, then F^+ = cfw_A -> A, B -> B, C -> B, C -> C, C -> BC, AB -> A, AB -> B, AB -> C, AB -> AB, AB -> AC, AB -> BC, AB -> ABC, AC -> A, AC -> B, AC -> C, AC -> AB,
CS340 - Fall 2006 Solution of Assignment 2 Algorithm Analysis and Linear Data Structures
1. Exercise 2.1 page 62 (6pts) 2/N, 37, N , N, N log log N, N log2 N, N log N, N log (N 2 ), N 1.5 , N 2 , N 2 log N, N 3 , 2N/2 , 2N . N log N and N log (N 2 ) grow
The Relational Algebra and Relational Calculus
5DV119 Introduction to Database Management
Ume
a University
Department of Computing Science
Stephen J. Hegner
[email protected]
http:/www.cs.umu.se/~hegner
The Relational Algebra and Relational Calculus
201110
Relational Algebra and SQL
Johannes Gehrke
[email protected]
http:/www.cs.cornell.edu/johannes
Slides from
Database Management Systems, 3rd Edition,
Ramakrishnan and Gehrke.
Database Management Systems, R. Ramakrishnan and J. Gehrke
1
Relational Que
Chapter 6
The Relational Algebra and Relational Calculus
Multiple-Choice Questions:
1) _ symbol is used to denote the SELECT operation.
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a) X
b)
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3) _ symbol is used to denote th
Equivalent Notations in Relational Algebra, Tuple Relational
Calculus, and Domain Relational Calculus
Select Operation
R = (A, B)
Relational Algebra:
B=17 (r)
Tuple Calculus:
cfw_t | t r B = 17
Domain Calculus:
cfw_<a, b> | <a, b> r b = 17
Project Operati
Database Systems
Session 5 Main Theme
Relational Algebra, Relational Calculus, and SQL
Dr. Jean-Claude Franchitti
New York University
Computer Science Department
Courant Institute of Mathematical Sciences
Presentation material partially based on textbook
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Rensselaer Polytechnic Institute
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Tuple Relational Calculus
Tuple Relational Calculus
A logical language with variables ranging over tuples:
cfw_ T | Cond
Return all tuples T that satisfy the condition Con
CS490 All Final Exams T/F - MCQ Solutions
Page 1 of 32
Contents
CS490 Fall 2006 Final.2
Part I, True/False Questions:.2
Part II, Multiple Choice Questions:.2
CS490 Spring 2006 Final.5
Part I, True/False Questions:.5
Part II, Multiple Choice Questions:.