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slide tweaks

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Oliver Kennedy 2021-02-08 23:37:10 -05:00
parent 3e2a27bd07
commit 8ef218200f
Signed by: okennedy
GPG key ID: 3E5F9B3ABD3FDB60
2 changed files with 4 additions and 4 deletions
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6
src/teaching/cse-562/2021sp/slide/2021-02-09-RA-Basics-and-Spark.erb
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@ -26,7 +26,7 @@ textbook: "Ch. 2.4, 5.1"
<li>How can we tell if <b>[Query B]</b> is better than <b>[Query A]</b>?</li>
</ol>
</p>
<p class="fragment">... but first let';s remind ourselves of few definitions.</p>
<p class="fragment">... but first let's remind ourselves of few definitions.</p>
</section>
<section>
@ -34,7 +34,7 @@ textbook: "Ch. 2.4, 5.1"
<dl>
<dt>Relation (Table)</dt>
<dd>A collection of Tuples of Values</dd>
<dd>A collection of Tuples of Primitive Values</dd>
<dd>All tuples have the same set of attributes, or schema</dd>
</dl>
</section>
@ -340,7 +340,7 @@ For each week:
<h3>Intersection ($\cap$)</h3>
<p>Return all tuples appearing in <u>both</u> <br/>of two union-compatible relations</p>
<div class="fragment" style="font-size: 70%;">
$$(\sigma_{(BORONAME=\texttt{'Brooklyn'})} (\pi_{SPC\_COMMON} \textbf{Trees})) \\ ~~~~~~~~~\cap (\sigma_{(BORONAME=\texttt{'Manhattan'})} (\pi_{SPC\_COMMON} \textbf{Trees}))$$
$$(\pi_{SPC\_COMMON} ( \sigma_{(BORONAME=\texttt{'Brooklyn'})} \textbf{Trees}))\\ ~~~~~~~~~\cap (\pi_{SPC\_COMMON} (\sigma_{(BORONAME=\texttt{'Manhattan'})} \textbf{Trees}))$$
<p>What is this query asking?</p>
</div>
</section>

2
templates/cse4562_2021_slides.erb
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@ -55,7 +55,7 @@ class_name = "CSE-4/562 Spring 2021"
<h4><%= class_name %></h4>
<p><%= date %></p>
<% if defined? textbook %>
<h5><b>Textbook</b>: <%= textbook %></h5>
<h5><b>Garcia-Molina/Ullman/Widom</b>: <%= textbook %></h5>
<% end %>
</section>