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 — cs-236:relational-algebra [2015/01/05 13:57] (current)egm created 2015/01/05 13:57 egm created 2015/01/05 13:57 egm created Line 1: Line 1: + Print out slides 8, 10, 11, and 17 from [http://​students.cs.byu.edu/​~cs236ta/​sharedLib/​discussions/​winter2013/​23-RelationalAlgebra.ppt 23-RelationalAlgebra.ppt]. ​ These pages are about the relational algebra operations $\rho$ and $\cup$, $\sigma$, $\pi$, and $|x|$ respectively. ​ For each page, annotate the examples either (1) by writing in your own word how the resulting relation(s) are obtained from the given relation(s),​ or (2) if you can’t explain an example, by writing a question whose answer would help you understand the operation illustrated in the example.