Question
General Computer Accessory Company : In General Computer Accessory Company (GCAC), each product (described by product number (primary key (PK)), description, and cost) comprises at
General Computer Accessory Company: In General Computer Accessory Company (GCAC), each product (described by product number (primary key (PK)), description, and cost) comprises at least one component and can comprise many components (described by component number (PK), description, and unit of measure), and each component is used to make zero to many products. GCAC keeps track of the quantities of products and components in the manufacturing process. In addition, a component can be used to make zero to many other components and a component can consist of zero to many other components. GCAC also keeps track of how many components go into making some other components. GCAC wants to develop an entity relationship diagram (ERD) to model the above data requirements.
In the ERD, which of the following correctly describe(s) the modeling of components? Select all that apply (note: partial (positive or negative) credits are assigned to partially correct or incorrect answers respectively; minimum score of the question is zero).
A) A binary relationship should be used to model the making of component(s).
B) The number of component(s) used to make a component is an attribute in the relationship type in the modeling.
C) Two entity types should be used to represent component(s) and its own component(s) separately.
D) A unary relationship should be used to model the making of component(s).
E)The cardinality near to the "component" side should be mandatory many.
F) A ternary relationship should be used to model the making of component(s).
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