Property covering: A powerful construct for schema derivations
Covering is a well-known relationship in semantic and object-oriented models that holds when a class is the union of a collection of subclasses. Covering has been studied in the past only for entity classes. In this paper, we study covering for properties, and we introduce a new relationship, called...
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| creator | Analyti, Anastasia Spyratos, Nicolas Constantopoulos, Panos |
| description | Covering is a well-known relationship in semantic and object-oriented models that holds when a class is the union of a collection of subclasses. Covering has been studied in the past only for entity classes. In this paper, we study covering for properties, and we introduce a new relationship, called property covering. Property covering holds when a property is the union of a collection of subproperties. Property covering allows to (i) partition a property into subproperties, (ii) express property value refinement, and (iii) express a particular form of negative information. We demonstrate that property covering is a powerful conceptual modeling mechanism, and we use it to provide a set of inference rules for schema derivations. |
| doi_str_mv | 10.1007/3-540-63699-4_22 |
| format | Conference Proceeding |
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| fulltext | fulltext |
| identifier | ISSN: 0302-9743 |
| ispartof | Conceptual Modeling — ER '97, 2005, p.271-284 |
| issn | 0302-9743 1611-3349 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_2034271 |
| source | Springer Books |
| subjects | Applied sciences Computer science control theory systems Exact sciences and technology Female Flower Inference Rule Information systems. Data bases Male Flower Memory organisation. Data processing Property Covering Real World Object Software |
| title | Property covering: A powerful construct for schema derivations |
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