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Relational Algebra Parameters and Recursive Closure Operations

Posted on 2011-03-01
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In relational algebra, what do "parameters" on the left side mean, such as in recursive closure operations?

example:
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Question by:JCW2
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derekkromm earned 500 total points
ID: 35013584
I'm pretty sure you can just think of them as variables

So the first 2 lines define what BORG_SSN and SUPERVISION are, and then the RESULT1 is a join on those 2 result sets
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by:JCW2
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Thank you for your help.
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