DATA-MANAGEMENT-FOUNDATIONS PRACTICE QUESTIONS & DATA-MANAGEMENT-FOUNDATIONS EXAM FEES

Data-Management-Foundations Practice Questions & Data-Management-Foundations Exam Fees

Data-Management-Foundations Practice Questions & Data-Management-Foundations Exam Fees

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Tags: Data-Management-Foundations Practice Questions, Data-Management-Foundations Exam Fees, Study Data-Management-Foundations Dumps, Data-Management-Foundations Latest Learning Material, Data-Management-Foundations Valid Test Tutorial

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WGU Data Management – Foundations Exam Sample Questions (Q60-Q65):

NEW QUESTION # 60
Which designation is an individual value, such as a salary?

  • A. Attribute type
  • B. Relationship
  • C. Glossary
  • D. Entity type

Answer: A

Explanation:
Anattribute typerefers to asingle, specific valuewithin a table, such as Salary, Age, or Price.
Example Usage:
A screenshot of a computer AI-generated content may be incorrect.

CREATE TABLE Employees (
EmpID INT PRIMARY KEY,
Name VARCHAR(50),
Salary DECIMAL(10,2)
);
* Salary is anattribute typewith individual values for each employee.
Why Other Options Are Incorrect:
* Option A (Glossary) (Incorrect):Refers todocumentation, not database values.
* Option B (Entity type) (Incorrect):Representsa class of objects(e.g., Employees), not individual values.
* Option D (Relationship) (Incorrect):Definesconnections between entities, not attributes.
Thus, the correct answer isAttribute type, as it represents anindividual data value.


NEW QUESTION # 61
Which SQL command uses the correct syntax to add a new employee "John Doe" to the Employee table?

  • A. INSERT INTO Employee (Name) VALUES ("John Doe");
  • B. INSERT Employee { "John Doe" };
  • C. INSERT Employee (Name) Values ("John Doe");
  • D. INSERT INTO Employee ("John Doe");

Answer: A

Explanation:
Thecorrect syntaxfor inserting a new row into a table follows this structure:
Standard SQL INSERT Syntax:
sql
INSERT INTO TableName (Column1, Column2, ...)
VALUES (Value1, Value2, ...);
For this scenario:
sql
INSERT INTO Employee (Name) VALUES ('John Doe');
Why Other Options Are Incorrect:
* Option A (Incorrect):Uses incorrect syntax { ... }, which isnot valid SQL syntax.
* Option C (Incorrect):Does not specify the column name, whichcauses an error.
* Option D (Incorrect):Misses theINTOkeyword, which is required in standard SQL.
Thus, the correct syntax isOption B, ensuring aproperly formatted insert statement.


NEW QUESTION # 62
Which main characteristic is used to differentiate between strong and weak entities in the process of database design?

  • A. Association
  • B. Primary key
  • C. Foreign key
  • D. Cardinality

Answer: B

Explanation:
Indatabase design, an entity is classified asstrong or weakbased on whether it has aprimary keythat uniquely identifies its records.
Differences Between Strong and Weak Entities:

CREATE TABLE Orders (
OrderID INT PRIMARY KEY,
CustomerID INT
);
CREATE TABLE OrderDetails (
OrderDetailID INT,
OrderID INT,
ProductID INT,
PRIMARY KEY (OrderDetailID, OrderID),
FOREIGN KEY (OrderID) REFERENCES Orders(OrderID)
);
* Orders is astrong entity(has OrderID as its own primary key).
* OrderDetails is aweak entity(depends on OrderID for uniqueness).
Why Other Options Are Incorrect:
* Option A (Association) (Incorrect):Associations describerelationshipsbut do not define strong/weak entities.
* Option C (Foreign key) (Incorrect):Weak entitiesdepend on foreign keys, butprimary keysdefine their status.
* Option D (Cardinality) (Incorrect):Cardinality definesrelationship constraintsbut doesnot differentiate entity types.
Thus, the correct answer isPrimary key, as it is the defining characteristic betweenstrong and weak entities.


NEW QUESTION # 63
Which clause from a SELECT statement immediately accompanies the SELECT clause in MySQL?

  • A. FROM
  • B. TABLE
  • C. VALUE
  • D. WHERE

Answer: A

Explanation:
InSQL syntax, the FROM clause is the first clause that follows SELECT. It specifies the table(s) from which the data will be retrieved.
Example:
sql
SELECT name, salary FROM Employees;
* Option A (Correct):The FROM clauseimmediately followsthe SELECT clause in MySQL.
* Option B (Incorrect):VALUE is not a valid clause in MySQL SELECT statements.
* Option C (Incorrect):WHERE is used to filter recordsafter specifying the table in FROM.
* Option D (Incorrect):TABLE is not a valid clause following SELECT in SQL.


NEW QUESTION # 64
Which relationship is shown in the following diagram?

  • A. Associative entity
  • B. Intersection data
  • C. Unary relationship
  • D. Many-to-many

Answer: C

Explanation:
The given diagram represents a unary relationship (also called a recursive relationship), which occurs when an entity is related to itself. In this case, salespersons back each other up, meaning a salesperson is associated with another salesperson from the same entity.
Key Observations from the Diagram:
* Single Entity (Salesperson)
* The table contains only one entity type, Salesperson, which has attributes such as Salesperson Number, Name, Commission, Percentage, and Year of Hire.
* Self-Referencing Relationship (Backs-up and Backed-up by)
* The diagram shows that a salesperson can back up another salesperson.
* This means that the relationship exists within the same entity rather than between two different entities.
* Cardinality (One-to-One Relationship in a Unary Form)
* The notation ( |-| ) in the ER diagram indicates a one-to-one recursive relationship.
* One salesperson can back up only one other salesperson, and each salesperson is backed up by only one.


NEW QUESTION # 65
......

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