2002年12月 1日 | RULES FOR (R) [ RESOURCE-RESOURCE ] | BACK >> 目次 |

● (R) in the combination between "resource and resource"
We use logical symbols--entities--to express propositions--combination of entities--in a logical expression and carry out operations similar to those in numbers. A proposition that contains a propositional connective, as "and" "or" "if", is called a compound proposition. RULE: A "combination-table" shall be created through the combination of two resources. A "combination-table" is called "taisyo-hyo", that sounds like "tie-show-he-yo".
An example:
So, the combination-table (taisyo-hyo) comes as,
The "set-theory" mathematicians counter this argument by saying that it's a algorithm through "join" operation, not a table--they take it as data-redundancy.
The combination-table of (employee-NO(R), division-code(R)) makes "implicitly" an event "assign".
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