WGU C170 Bundled Docs 2024 COMPLETE
SOLUTIONS AND STUDY GUIDE || 100%
GUARANTEED PASS <LATEST VERSION>
Description: This WGU C170 bundle contains complete solutions and notes for all
relevant assignments, assessments, and study materials. Updated for 2024, it
provides verified answers and explanations for database management and SQL
topics.
Keywords: WGU C170 Database Management SQL Study Bundle Objective
Assessment Verified Answers WGU Course
Category 1: Database Fundamentals & Design (25 Questions)
1. Q: What is a Database Management System (DBMS)?
o A: A software system that enables users to define, create, maintain,
and control access to the database.
2. Q: What is the primary difference between data and information?
o A: Data are raw, unorganized facts. Information is data that has been
processed and organized to be meaningful and useful.
3. Q: What are the three schema architecture levels in the ANSI-SPARC
model?
o A: Internal (Physical), Conceptual (Logical), and External (View) levels.
4. Q: What is the main goal of data independence?
, o A: To separate the user applications from the physical and logical
storage details of the data. Changes in one level should not affect the
others.
5. Q: What is the difference between logical and physical data
independence?
o A: Logical independence protects applications from changes in the
logical structure (tables). Physical independence protects the logical
schema from changes in the physical storage structure (files, indexes).
6. Q: What is an Entity-Relationship Diagram (ERD)?
o A: A graphical representation of the logical structure of a database,
showing entities, their attributes, and the relationships between
them.
7. Q: Define an entity, an attribute, and a relationship.
o A: An entity is a real-world object (e.g., Student). An attribute is a
property of an entity (e.g., StudentID, Name). A relationship is an
association between two or more entities (e.g., Student Enrolls
in Course).
8. Q: What are the key types of attributes?
o A: Simple vs. Composite; Single-valued vs. Multivalued; Stored vs.
Derived.
9. Q: What is a composite attribute?
o A: An attribute that can be divided into smaller sub-parts (e.g., Name
-> FirstName, LastName).
10.Q: What is a derived attribute?
o A: An attribute whose value is calculated from another attribute
(e.g., Age derived from DateOfBirth).
11.Q: What is a candidate key?
SOLUTIONS AND STUDY GUIDE || 100%
GUARANTEED PASS <LATEST VERSION>
Description: This WGU C170 bundle contains complete solutions and notes for all
relevant assignments, assessments, and study materials. Updated for 2024, it
provides verified answers and explanations for database management and SQL
topics.
Keywords: WGU C170 Database Management SQL Study Bundle Objective
Assessment Verified Answers WGU Course
Category 1: Database Fundamentals & Design (25 Questions)
1. Q: What is a Database Management System (DBMS)?
o A: A software system that enables users to define, create, maintain,
and control access to the database.
2. Q: What is the primary difference between data and information?
o A: Data are raw, unorganized facts. Information is data that has been
processed and organized to be meaningful and useful.
3. Q: What are the three schema architecture levels in the ANSI-SPARC
model?
o A: Internal (Physical), Conceptual (Logical), and External (View) levels.
4. Q: What is the main goal of data independence?
, o A: To separate the user applications from the physical and logical
storage details of the data. Changes in one level should not affect the
others.
5. Q: What is the difference between logical and physical data
independence?
o A: Logical independence protects applications from changes in the
logical structure (tables). Physical independence protects the logical
schema from changes in the physical storage structure (files, indexes).
6. Q: What is an Entity-Relationship Diagram (ERD)?
o A: A graphical representation of the logical structure of a database,
showing entities, their attributes, and the relationships between
them.
7. Q: Define an entity, an attribute, and a relationship.
o A: An entity is a real-world object (e.g., Student). An attribute is a
property of an entity (e.g., StudentID, Name). A relationship is an
association between two or more entities (e.g., Student Enrolls
in Course).
8. Q: What are the key types of attributes?
o A: Simple vs. Composite; Single-valued vs. Multivalued; Stored vs.
Derived.
9. Q: What is a composite attribute?
o A: An attribute that can be divided into smaller sub-parts (e.g., Name
-> FirstName, LastName).
10.Q: What is a derived attribute?
o A: An attribute whose value is calculated from another attribute
(e.g., Age derived from DateOfBirth).
11.Q: What is a candidate key?
