Data Modeling 101 Quiz

What is the primary purpose of data modeling?

• To create a visual representation of data

• To define and organize data requirements for a system

• To store data in a cloud environment

• To encrypt data for security purposes

Which of the following is NOT a level of data abstraction?

• Physical Data Model

• Conceptual Data Model

• Virtual Data Model

• Logical Data Model

What is a primary key?

• A system-generated key used as the primary key

• A key that consists of more than one attribute

• A unique identifier for each record in a table

• A field in a table that refers to the primary key in another table

What does the crow's foot notation represent in data modeling?

• Data encryption methods

• Data storage techniques

• Types of data models

• Relationships between tables

Which type of data model focuses on business concepts and rules?

• Dimensional Data Model

• Physical Data Model

• Logical Data Model

• Conceptual Data Model

What is a foreign key used for?

• To define data types and constraints

• To uniquely identify a record within a table

• To establish a link between two tables

• To optimize data retrieval

Which of the following is a benefit of data modeling?

• Improved understanding of data

• Decreased data security

• Increased data redundancy

• Increased data complexity

What is a surrogate key?

• A natural key that exists in the real world

• A system-generated key used as the primary key

• A key that consists of more than one attribute

• A candidate key not chosen as the primary key

Which of the following is a limitation of data modeling?

• Increased efficiency

• Limited flexibility

• Improved data quality

• Enhanced collaboration

What is the focus of a physical data model?

• Defining business rules and concepts

• How data is stored, organized, and accessed

• High-level view of data and its relationships

• Representing business information