Question 48

The last name of a newly hired employee is an example of character string data.

Character string data refers to sequences of characters used to represent text. In this context, the last name of a newly hired employee fits perfectly as it consists of letters and is treated as a string in database handling.

A) The first letter of a person’s last name

While the first letter of a person's last name is indeed a character, it is a single character rather than a complete string. Therefore, it does not fully represent the concept of character string data, which typically involves multiple characters forming a word or name.

B) Whether a bank account does or does not have money in it

This option represents a binary state (yes or no) rather than a character string. It is a logical or boolean value, which is not applicable to the character string data type that focuses on textual information.

C) The last name of a newly hired employee

This is a valid example of character string data as it consists of multiple characters that can form a name. It represents a string of text which is a primary use case for character strings in a database.

D) An approximation of π as 3.14159

This option represents a numerical value rather than character string data. While it can be represented in a database, it does not fall under the category of strings since it is a numeric approximation rather than text.

Conclusion

The last name of a newly hired employee is the only option that accurately exemplifies character string data as it is composed of letters forming a text string. All other options either represent single characters, numeric or boolean values, which do not align with the definition of character strings used in databases. Thus, option C is definitively correct.