2002年 9月 1日 | RELATION vs. RELATIONSHIP | BACK >> 目次 |

● Relation vs. Relationship
"aRb" says that "a" stands to "b" in the relation "R", provided mathematically a description of R(a, b) "Resource" entities are "domain-unordered", "aRb" cannot have for its primary function the apt description of a data structure. Accordingly, I propose that we should deal not with relations, which are domain-ordered, but with relationships which are their domain-unordered counterparts, and that we should evolve the following rule as a guide for relationship between the two, a and b:
1. a ≠ b 2. a = b (recursive) □ |

<< もどる | HOME | すすむ >> | |

Ｔ字形ＥＲ手法の英訳 |