DA0-001 · Question #343
DA0-001 Question #343: Real Exam Question with Answer & Explanation
The correct answer is B: Float. The sample data "5.99" is a decimal number, which specifically requires the Float data type to accurately store values with fractional components in most programming languages and database systems.
Question
An analyst needs to determine the appropriate data type for the following sample data: Sample data collected: 5.99 Which of the following data types should be used for this data?
Options
- AText
- BFloat
- CAlphanumeric
- DNumeric
Explanation
The sample data "5.99" is a decimal number, which specifically requires the Float data type to accurately store values with fractional components in most programming languages and database systems.
Common mistakes.
- A. Text (or String) is used for sequences of characters and would treat "5.99" as text, preventing mathematical operations.
- C. Alphanumeric is a broad category encompassing both alphabetic and numeric characters, typically stored as text, which is inappropriate for numerical calculations.
- D. Numeric is a general category for numbers; Float is a more specific and appropriate type for decimal numbers compared to just Numeric which could also imply integer types.
Concept tested. Data types, floating-point numbers
Reference. https://learn.microsoft.com/en-us/sql/t-sql/data-types/float-and-real-transact-sql
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