The target attribute is a prohibited attribute of the ____ element, in the strict DTD.

? In the accompanying figure, any field that serves as a primary key is called a _____.?

A. ?candidate key B. ?secondary key C. ?combination key D. ?foreign key

A long integer format uses _____ bits to represent the number 1,234,567,890 in binary form.

A. 12 B. 24 C. 30 D. 32