Difficulty: Easy

Average Score: 86%

A person is updating procedures for handling character string data within a database

Which value is an example of this data type?

Rationale

The last name of a newly hired employee.

This value represents a character string, which is a data type specifically used to store sequences of characters, such as letters and symbols. The last name is a clear example of a character string as it consists solely of alphabetic characters.

A (The first letter of a person€™s last name) YOUR ANSWER

While this option does represent a character, it is only a single character rather than a full character string. Character strings typically consist of multiple characters, and thus this example does not fully exemplify the data type in question.

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

This option describes a boolean value, which indicates a true or false state. It does not relate to character strings, as it does not consist of a series of characters, but rather a binary condition regarding the bank account.

C (The last name of a newly hired employee) CORRECT

This correctly exemplifies a character string data type as it encompasses a sequence of letters forming a name. Names can vary in length and comprise multiple characters, making this option a suitable representation of string data.

D (An approximation of π as 3.14159) YOUR ANSWER

This option is a numerical value, specifically a floating-point number, used to represent a mathematical constant. It does not fall under the character string data type since it consists entirely of digits and does not include alphabetic characters.

Conclusion

Character strings are utilized to store sequences of characters within databases, making them essential for handling textual data. Among the given choices, the last name of a newly hired employee stands out as the only true character string example, while the other options either represent single characters, boolean values, or numerical data. Understanding these distinctions is crucial for accurately managing data types in database applications.

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