DA0-001 Question #250: Real Exam Question with Answer & Explanation

The correct answer is D: Alphanumeric. The alphanumeric data type is specifically designed to store a combination of both alphabetic characters (letters) and numeric digits (numbers), along with other symbols. This distinguishes it from data types that exclusively store numbers or single characters.

Data Concepts and Environments

Question

In comparison to other data types, which of the following can hold a mix of numbers and letters?

Options

ACharacter
BFloat
CInteger
DAlphanumeric

Explanation

The alphanumeric data type is specifically designed to store a combination of both alphabetic characters (letters) and numeric digits (numbers), along with other symbols. This distinguishes it from data types that exclusively store numbers or single characters.

Common mistakes.

A. A character data type typically holds a single letter, number, or symbol, not a mix of numbers and letters in a string.
B. A float data type is used to store floating-point numbers, which are decimal numbers, and cannot directly store letters.
C. An integer data type is used to store whole numbers only and cannot store letters.

Concept tested. Data types - alphanumeric

Reference. https://learn.microsoft.com/en-us/sql/t-sql/data-types/char-and-varchar-transact-sql?view=sql-server-ver16

Topics

#Data types#Alphanumeric data#Basic data concepts

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