1. ΗΥ-566 ΔΙΑΧΕΙΡΙΣΗ ΓΝΩΣΗΣ ΣΤΟ ΔΙΑΔΙΚΤΥΟ Ασκηση 2 Πεδρο, Κατη και Μπεριτ Ελενη

2. The zoo ontology II New diagram for OWL. Differences with the old diagram and new classes. Some classes and properties.

3. New diagram for OWL.dia2.pdfdia2.pdf

4. Differences and new classes (1 of 4) We have extended the class Cage with three subclasses, so now we can restrict the relation livesIn (Animal-Cage) and hasIn (Cage-Animal). For example, a water animal needs a pool. We have also added disjoints between Member/Employee, and Vet/Administrator/Cleaner/AnimalWorker. We didn't make the Cage class to be disjoint because a Pool can be Open-Air or Covered, and an Open-Air Cage can have a Covered part. The Animal class isn't disjoint neither because, e.g. the penguin lives in water and in land.

5. Differences and new classes (2 of 4) We have added cardinalities to the previous diagram. For each relation between two classes we have made them both ways, except between Employee-Zoo and Animal-Animal. We did this because it's easy to find in which zoo an employee works, but it takes more time to go the opposite way (zoo -> employee). For the other relation (Animal-Animal) we think that it's enough with one way because the information would be the same in both directions.

6. Differences and new classes (3 of 4) New attributes: Cage trees: boolean rocks: boolean New classes: (sub classes of Cage) Pool poolDepth: float poolWidth: float poolLength: float saltPercentage: float type: lake/sea/artificial

7. Differences and new classes (4 of 4) Open Air (without roof) wallsHigh: float wallsLength: float wallsWidth: float Covered (with roof) roomLength: float roomWidth: float roomHigh: float

8. Some classes and properties (1 of 3) This is the class of zoo. The zoo has to have at least one animal, one emp and one dept. 1 1 1

9. Some classes and properties (2 of 3) This is the relationship that says that a zoo has animals

10. Some classes and properties (3 of 3) The class of all the the Tickets 1 Property with the type of a Ticket