equal
deleted
inserted
replaced
48 primary key (but it is possible to declare uniqueness on other |
48 primary key (but it is possible to declare uniqueness on other |
49 attributes) |
49 attributes) |
50 |
50 |
51 Also |yams| supports the notions of: |
51 Also |yams| supports the notions of: |
52 |
52 |
53 * entity inheritance, |
53 * entity inheritance (quite experimental yet, and completely |
|
54 undocumented), |
54 * relation type: that is, relationships can be established over a set |
55 * relation type: that is, relationships can be established over a set |
55 of couple of entity types (henre the distinction made between |
56 of couple of entity types (henre the distinction made between |
56 `RelationType` and `RelationDefinition` below) |
57 `RelationType` and `RelationDefinition` below) |
57 |
58 |
58 Finally |yams| has a few concepts of its own: |
59 Finally |yams| has a few concepts of its own: |