Ndr interface Dependency Agreement

4.Logical Interface

4.1.Logical Data Model

The Logical Data Model defines, and specifies the relationship between:

The Dog Entity;

The Litter Entity;

The Meeting Entity;

The Person Entity;

The Group Entity;

Events.

Note that Events are not Entities in their own right; the presence of an Event simply reflects a change to one of the previously mentioned Entities: Dog, Litter, Meeting, Person or Group.

Most of the attributes specified in the Figure - Figure are considered to be self explanatory; however for completeness, a description of each attribute is provided in Section 12.

4.1.1.Dog Entity

Figure - Dog Entity. See footnote ¹ for an explanation of the types and numbering used in this diagram.

The Dog Entity, shown in Figure , defines the attributes of a Dog.

A Dog is identified in the NDR by its earbrand.

The NDR stores a dog’s identifying information, as well as its current Owner, Trainer and Authority to Breed (if applicable).

The NDR maintains a history of:

Ownership;

Trainer;

Penalties;

Races where the Dog has been a participant.

Other data maintained in the Dog Entity include a link to the Litter it was part of, and its “lifestate”.