Question

1. If a database designer wants to capture information about computing entities that can be either persons (identified by SSN) or computers (identified by serial numbers), which of the following enhanced ER concepts is more proper to use:

a. generalization

b. aggregation

c. category

d. weak entity type

Answer 1

Step1##

Answer1:  Option A will be suitable for this.

• Generalization can best fit for this because The desgner wants to capture information abot compting entities which can be human or computer. Generalization is a process ofgeneralizing entities which may contain attributes which are generalized or properties of such attributes.Common features will be contained in the entity.
• The new generalized entity can also combine with low level etities and can make further high level of generalization in entity.