M Hammer and D. McLeod. A semantic database model. ACM Trans. Database Systems 6(3):351-386, 1981. Home/Search Document Not in Database Summary Related Articles Check |
This paper is cited in the following contexts:
A Behavioral Notion of Subtyping - Liskov, Wing (1994) (84 citations) (Correct)
....employee is a subtype of both student and employee (and also person, since the subtype relation is transitive) In this example, the subtype objects have more state than those of the supertype as well as more methods. Another example from the database literature concerns different kinds of ships [Hammer and McLeod 1981]. The supertype is generic ships with methods to determine such things as who is the captain and where the ship is registered. Subtypes contain more specialized ships such as tankers and freighters. There can be quite an elaborate hierarchy (e.g. tankers are a special kind of freighter) Windows ....
Hammer, M. and McLeod, D. 1981. A semantic database model. ACM Trans. Database Systems 6, 3, 351--386.
Family Values: A Behavioral Notion of Subtyping - Liskov, Wing (1994) (1 citation) (Correct)
....relation is transitive) In this example, the subtype objects have more state than those of the supertype as well as more methods. person student employee student employee Figure 8: Person, Student, and Employee Another example from the database literature concerns different kinds of ships [18]. The supertype is generic ships with methods to determine such things as who is the captain and where the ship is registered. Subtypes contain more specialized ships such as tankers and freighters. There can be quite an elaborate hierarchy (e.g. tankers are a special kind of freighter) ....
M Hammer and D. McLeod. A semantic database model. ACM Trans. Database Systems, 6(3):351--386, 1981.
Behavioral Subtyping Using Invariants and Constraints - Liskov, Wing (1999) (3 citations) (Correct)
....relation is transitive) In this example, the subtype objects have more state than those of the supertype as well as more methods. person student employee student employee Figure 6: Person, Student, and Employee Another example from the database literature concerns different kinds of ships [HM81] The supertype is generic ships with methods to determine such things as who is the captain and where the ship is registered. Subtypes contain more specialized ships such as tankers and freighters. There can be quite an elaborate hierarchy (e.g. tankers are a special kind of freighter) Windows ....
Hammer, M. and McLeod, D. A semantic database model. ACM Trans. Database Systems, 6(3):351--386, 1981.
Family Values: A Semantic Notion of Subtyping - Barbara Liskov And (1992) (5 citations) (Correct)
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M Hammer and D. McLeod. A semantic database model. ACM Trans. Database Systems 6(3):351-386, 1981.
A Semantic Database Management System: SIM - Saurabh Boyed Boyed (Correct)
No context found.
R. King, D. McLeod. Semantic Database Models. In S.B. Yao (Ed). Principles of Database Design. Prentice Hall 84.
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