The Benefits of Using Desktop WGU Data-Management-Foundations Practice Test Software
The Benefits of Using Desktop WGU Data-Management-Foundations Practice Test Software
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Tags: Valid Data-Management-Foundations Exam Sample, Valid Data-Management-Foundations Test Review, Data-Management-Foundations Reliable Test Materials, Data-Management-Foundations Valid Exam Guide, Data-Management-Foundations Valid Exam Fee
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WGU Data Management – Foundations Exam Sample Questions (Q30-Q35):
NEW QUESTION # 30
Which description defines a data type?
- A. It has a name and a varying set of rows.
- B. It has values corresponding to columns.
- C. It is a named set of values.
- D. It is an unnamed tuple of values.
Answer: C
Explanation:
Adata typedefines the kind of data a column can store in a database. It ensures data consistency and efficient storage.
* Option A (Correct):A data type is anamed set of values, such asINTEGER, VARCHAR, DATE, etc.
* Option B (Incorrect):A tuple refers to arowin a relational database, not a data type.
* Option C (Incorrect):Data typesdefinecolumn values, but they do not correspond directly to columns.
* Option D (Incorrect):Data types do not have avaryingset of rows; they define attributes for columns.
NEW QUESTION # 31
Which action does the % operator accomplish in MySQL?
- A. Raises a numeric value to the power of another
- B. Subtracts a numeric value from another
- C. Compares two numeric values for equality
- D. Divides two numeric values and returns the remainder
Answer: D
Explanation:
The % operator in MySQL is known as themodulus operator. It returns theremainderof a division operation between two numbers.
Example:
sql
SELECT 10 % 3; -- Output: 1 (10 divided by 3 gives remainder 1)
* Option A (Incorrect):Raising a number to a power is done using the POW() function or