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DATE 2014-12-01

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MESSAGE
DATE 2014-12-18
FROM Ruben Safir
SUBJECT Re: [LIU Comp Sci] Normalization review
From owner-learn-outgoing-at-mrbrklyn.com Thu Dec 18 12:57:21 2014
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Date: Thu, 18 Dec 2014 12:57:19 -0500
From: Ruben Safir
To: learn-at-mrbrklyn.com
Subject: Re: [LIU Comp Sci] Normalization review
Message-ID: <20141218175719.GA8203-at-panix.com>
References:
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Ah - but that is the same as the text book.

It says, for example:

The only free tuple variables in a relational calculus expression should
be those that appear to the left of the bar ( | ).
In above query, t is the only free variable; it is then bound
successively to each tuple.

WHY? What is the point of the bar and what does it matter if a tupple
variable is free or bound?

This should have been tought FIRST, in the first two weeks and driven
into us over the entire semester. This is tough and important stuff.

Ruben

  1. 2014-12-02 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Arch Study tonight
  2. 2014-12-02 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Memory Notes et al
  3. 2014-12-02 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: Sorry for the last reply
  4. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] All the notes through External Memory
  5. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  6. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  7. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  8. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  9. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  10. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  11. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  12. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  13. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  14. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  15. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  16. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  17. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  18. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  19. 2014-12-06 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Parity Bit Algebra
  20. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  21. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Parity Bit Algebra
  22. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] All the notes through External Memory
  23. 2014-12-06 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Parity Bit Algebra
  24. 2014-12-07 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Computer Available
  25. 2014-12-07 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Computer Available
  26. 2014-12-07 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Computer Available
  27. 2014-12-07 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] Upcoming Events for Oracle Professionals
  28. 2014-12-08 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Memorize Optcode
  29. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  30. 2014-12-08 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Memorize Optcode
  31. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  32. 2014-12-08 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Memorize Optcode
  33. 2014-12-08 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] Memorize Optcode
  34. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  35. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  36. 2014-12-08 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Memorize Optcode
  37. 2014-12-08 Ruben <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  38. 2014-12-08 Ruben <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  39. 2014-12-08 Ruben <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Memorize Optcode
  40. 2014-12-08 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] Memorize Optcode
  41. 2014-12-08 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] UPerclassmen
  42. 2014-12-08 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] UPerclassmen
  43. 2014-12-08 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] UPerclassmen
  44. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] UPerclassmen
  45. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Arch Problem Solution for the final HW question
  46. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Foundation for OPTCODE and Machine Instruction
  47. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Memorize Optcode
  48. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Notes Done on In and Out, Operating Systemsm Modules and Memoery
  49. 2014-12-08 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] UPerclassmen
  50. 2014-12-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Anyone in school
  51. 2014-12-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] CPU Instructions - Notes for Chapter 14
  52. 2014-12-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Machine Instructions notes
  53. 2014-12-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Relative - PC addressing
  54. 2014-12-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] wifi
  55. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Answers to the final review questions
  56. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] database Hoem Work
  57. 2014-12-10 duodujames <duodujames-at-gmail.com> RE: [LIU Comp Sci] noone in class?
  58. 2014-12-10 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] UPerclassmen
  59. 2014-12-10 Maneesh Kongara <maneeshkongara-at-gmail.com> Subject: [LIU Comp Sci] Answers to the final review questions
  60. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] database Hoem Work
  61. 2014-12-10 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Fwd: MINIPROJECT
  62. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] HW 6
  63. 2014-12-10 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] MINIPROJECT
  64. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] noone in class?
  65. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] welcome jame
  66. 2014-12-10 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: HW Last one maybe 6?]
  67. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Fwd: Re: [LIU Comp Sci] Database Class concepts which are still unclear
  68. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Re: Fwd: Re: [LIU Comp Sci] Database Class concepts which are still
  69. 2014-12-11 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Database Class concepts which are still unclear
  70. 2014-12-11 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Database Class concepts which are still unclear
  71. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Database Class concepts which are still unclear
  72. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Database Class concepts which are still unclear
  73. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Invitation: Flatiron Alumni Present!
  74. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Re: Database Class concepts which are still unclear
  75. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: turning attibute values into relations?
  76. 2014-12-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] jobs
  77. 2014-12-12 James Kwabena Duodu <duodujames-at-gmail.com> Re: [LIU Comp Sci] Answers to the final review questions
  78. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] .NET and C# free implimentation
  79. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Calling Upper Classman
  80. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Re: n-ary operations
  81. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Re: Oracle XE Web Server
  82. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Re: relational algrabra division?
  83. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] jobs
  84. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] lerning tools
  85. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] liu mailing list
  86. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: turning attibute values into relations?
  87. 2014-12-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Sunday Arch Finals Review Study Session
  88. 2014-12-13 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Answers to the final review questions
  89. 2014-12-13 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: relational algrabra division?
  90. 2014-12-13 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Base Conversations
  91. 2014-12-13 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Gates HW problems
  92. 2014-12-13 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Logic Gates
  93. 2014-12-13 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] old homework question
  94. 2014-12-14 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Answers to the final review questions
  95. 2014-12-14 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] NOTE ERROR:****Error in the Hamming notes on the final review
  96. 2014-12-15 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Answers to the final review questions
  97. 2014-12-15 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] study hall today
  98. 2014-12-15 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] study hall today
  99. 2014-12-15 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] study hall today
  100. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] study hall today
  101. 2014-12-15 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] study hall today
  102. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] study hall today
  103. 2014-12-15 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] study hall today
  104. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] study hall today
  105. 2014-12-15 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] study hall today
  106. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] study hall today
  107. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] study hall today
  108. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] errror in the hamming notes.
  109. 2014-12-15 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [Samir.Iabbassen-at-liu.edu: RE: NOTE ERROR:****Error in the Hamming
  110. 2014-12-16 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Study Hall
  111. 2014-12-16 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Study Hall
  112. 2014-12-16 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: HW Last one maybe 6?]
  113. 2014-12-17 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] database class
  114. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] database class
  115. 2014-12-17 James Kwabena Duodu <duodujames-at-gmail.com> Re: [LIU Comp Sci] database class
  116. 2014-12-17 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] database class
  117. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] database class
  118. 2014-12-17 duodujames <duodujames-at-gmail.com> Re: [LIU Comp Sci] database class
  119. 2014-12-17 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] database class
  120. 2014-12-17 James Kwabena Duodu <duodujames-at-gmail.com> Re: [LIU Comp Sci] database class
  121. 2014-12-17 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] database class
  122. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] database class
  123. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] database class
  124. 2014-12-17 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] database class
  125. 2014-12-17 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] study hall today
  126. 2014-12-17 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] study hall today
  127. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] why is this textbook just off the look
  128. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] why is this textbook just off the look
  129. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] database class
  130. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Database HW6
  131. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] the silence
  132. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Traffic Lights Diagram
  133. 2014-12-17 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] why is this textbook just off the look
  134. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] in coming
  135. 2014-12-18 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Need tutoring on Relational Calculus
  136. 2014-12-18 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Need tutoring on Relational Calculus
  137. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Need tutoring on Relational Calculus
  138. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Need tutoring on Relational Calculus
  139. 2014-12-18 Sergei Glikstein <serge.gl-at-gmail.com> Re: [LIU Comp Sci] Normalization review
  140. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  141. 2014-12-18 Sergei Glikstein <serge.gl-at-gmail.com> Re: [LIU Comp Sci] Normalization review
  142. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  143. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  144. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  145. 2014-12-18 maneeshkongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Normalization review
  146. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  147. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  148. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  149. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  150. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  151. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  152. 2014-12-18 Sergei Glikstein <serge.gl-at-gmail.com> Re: [LIU Comp Sci] Normalization review
  153. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  154. 2014-12-18 From: <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  155. 2014-12-18 Sergei Glikstein <serge.gl-at-gmail.com> Re: [LIU Comp Sci] Normalization review
  156. 2014-12-18 From: <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Normalization review
  157. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] BCNF
  158. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] in coming
  159. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] lunch
  160. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Need tutoring on Relational Calculus
  161. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Normalization review
  162. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: relational calculus
  163. 2014-12-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] relational calculus
  164. 2014-12-19 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Oracle Files for the Homework and Oracle Resources
  165. 2014-12-22 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Operating Systems Class
  166. 2014-12-30 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Creating a New OS: Final Projects for MS degree

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