DA0-002 · Question #38
Given the following table: Which of the following data types should an analyst use for the numeric values in the Value column?
The correct answer is B. Float. When dealing with numeric values that may contain decimal points or require a balance between range and storage, the Float data type is generally a suitable choice. It represents single-precision floating-point numbers.
Question
Given the following table:
Which of the following data types should an analyst use for the numeric values in the Value column?
Options
- ADouble
- BFloat
- CBoolean
- DInteger
How the community answered
(40 responses)- A3% (1)
- B95% (38)
- C3% (1)
Why each option
When dealing with numeric values that may contain decimal points or require a balance between range and storage, the Float data type is generally a suitable choice. It represents single-precision floating-point numbers.
Double is also a floating-point type, but it offers higher precision (double-precision) and requires more storage than Float, making Float a more appropriate general choice when double precision isn't explicitly required.
The Float data type is used to store floating-point numbers, which can represent real numbers with decimal points. It is suitable for numeric values where precision is important but not absolute, and can handle a wide range of magnitudes, making it a good general choice for diverse numeric data.
Boolean stores true/false or 1/0 values, which is not appropriate for general numeric values that can take on a range of magnitudes.
Integer stores whole numbers without fractional components, making it unsuitable if the 'Value' column could potentially contain decimal numbers.
Concept tested: Database data types - numeric values
Source: https://learn.microsoft.com/en-us/sql/t-sql/data-types/float-and-real-transact-sql
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