You are advising the owner of Smalltown Computer, a new, local computer repair store that also ...

Ans. to #1

3-D printing, also known as additive manufacturing, uses a machine called a 3-D printer to make solid objects, layer by layer, from specifications in a digital file. 3-D printing is often used for custom manufacturing and therefore might be useful for Smalltown Computer in building custom computers.

Ans. to #2

B

Ans. to #3

A

Ans. to #4

Attributes are assigned at the highest logical level that is possible in the hierarchy. For example, in the following diagram one would assign the name to the person supertype so that it could be shared by as many subtypes as possible.

Ans. to #5

In many database management systems, data integrity controls can be built into the field. The data type is one integrity control. Another integrity control is default values, where one specifies the value that the field will take if no data has been entered. Range control is another data integrity constraint which indicates the upper and lower bounds for the field. Null value control allows one to specify whether null values are allowed or not in the field. Finally, referential integrity ensures that any value entered into a foreign key must have a corresponding value in the primary key of the related table. This ensures that there are no misplaced values in the foreign key.

Ans. to #6

B

I'm still confused, but thanks for answering correctly