Home /
Expert Answers /
Computer Science /
how-do-you-model-service-not-modeled-into-any-relationship-foreign-key-or-34-relationship-34-relatio-pa404
(Solved): How do you model Service? Not modeled into any relationship Foreign key (or "relationship" relation ...
How do you model Service? Not modeled into any relationship Foreign key (or "relationship" relation) Set of simple component attributes Relation and foreign key with single attribute value One Atomic Attribute Relation Relation and foreign keys Relation and two foreign keys Relation with owning entity primary key participating in primary key
In Person, if address was a composite attribute, consisting of first name, last name, and middle initial, how would you model that attribute? Relation with owning entity primary key participating in primary key Not modeled into any relationship Relation and foreign key with single attribute value One Atomic Attribute Relation Relation and two foreign keys Foreign key (or "relationship" relation) Set of simple component attributes Relation and foreign keys
How is of_type modeled? Relation and foreign keys Foreign key (or "relationship" relation) Relation with owning entity primary key participating in primary key Relation Set of simple component attributes One Atomic Attribute Not modeled into any relationship Relation and two foreign keys Relation and foreign key with single attribute value
How is Plane_service modeled? Not modeled into any relationship One Atomic Attribute Relation and foreign key with single attribute value Relation and foreign keys Relation with owning entity primary key participating in primary key Relation Foreign key (or "relationship" relation) Set of simple component attributes Relation and two foreign keys
Expert Answer
1. Ans: Relation Based on the given options, I can say "Relation" to model the "Service" entity in the SMALL AIRPORT database. By creating a separate entity for "Service," you can define its distinct properties and establish relationships with other entities as needed. This approach provides flexibility and allows for future expansion if additional attributes or relationships related to the service are required2.Ans : set of simple component attributes. Here's an example of how you can model it:Person (Ssn, Number, Location, Name, Phone, FirstName, LastName, MiddleInitial)In this example, "FirstName," "LastName," and "MiddleInitial" are separate attributes representing the components of the composite "address" attribute. The other attributes (Ssn, Number, Location, Name, Phone) are assumed to be other attributes of the "Person" entity.By modeling the address as a set of simple component attributes, can easily access and manipulate each component of the address individually.