Solved

Relational Algebra Parameters and Recursive Closure Operations

Posted on 2011-03-01
2
942 Views
Last Modified: 2012-05-11
In relational algebra, what do "parameters" on the left side mean, such as in recursive closure operations?

example:
Example.png
0
Comment
Question by:JCW2
2 Comments
 
LVL 15

Accepted Solution

by:
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
0
 

Author Closing Comment

by:JCW2
ID: 35014285
Thank you for your help.
0

Featured Post

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When table data gets too large to manage or queries take too long to execute the solution is often to buy bigger hardware or assign more CPUs and memory resources to the machine to solve the problem. However, the best, cheapest and most effective so…
Azure Functions is a solution for easily running small pieces of code, or "functions," in the cloud. This article shows how to create one of these functions to write directly to Azure Table Storage.
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question