DA0-001 Question #347: Real Exam Question with Answer & Explanation

The correct answer is C: varchar. VARCHAR is a data type optimized for storing variable-length strings. It only uses the necessary space for each value, making it more efficient in terms of storage compared to CHAR, which allocates a fixed amount of space regardless of the string's actual length.

Data Concepts and Environments

Question

A column is being used to store strings of variable lengths. Performance is a concern, so the column needs to use as little space as possible. Which of the following data types best meets these requirements?

Options

Achar
Bnchar
Cvarchar
Dnvarchar

Explanation

VARCHAR is a data type optimized for storing variable-length strings. It only uses the necessary space for each value, making it more efficient in terms of storage compared to CHAR, which allocates a fixed amount of space regardless of the string's actual length.

Topics

#Database data types#Storage optimization#Variable-length strings

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