1. What is the primary goal of data modeling in the context of data science? A. To collect raw data B. To predict future data C. To represent and understand data D. To clean and preprocess data Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
2. In data modeling, what is the term for a visual representation of the relationship between different entities in a database? A. Data Dictionary B. Data Flow Diagram (DFD) C. Entity-Relationship Diagram (ERD) D. Data Cube Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
3. What is the process of transforming raw data into a structured format suitable for analysis called? A. Data Aggregation B. Data Wrangling C. Data Imputation D. Data Integration Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
4. Which data modeling approach represents data as a collection of entities, their attributes, and the relationships between them? A. Hierarchical Modeling B. Relational Modeling C. Object-Oriented Modeling D. Entity-Relationship Modeling Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
5. What is the purpose of a Data Flow Diagram (DFD) in data modeling? A. To visualize the data distribution B. To represent the flow of data C. To create summary statistics D. To display relationships between entities Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
6. In data modeling, what is the term for the process of defining the structure and organization of data in a database? A. Data Mining B. Data Collection C. Data Architecture D. Data Transformation Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
7. Which data modeling approach is primarily used for representing data in a tabular format with rows and columns? A. Relational Modeling B. Hierarchical Modeling C. Object-Oriented Modeling D. Entity-Relationship Modeling Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
8. What is the primary purpose of an Entity-Relationship Diagram (ERD) in data modeling? A. To visualize the data distribution B. To represent the structure of a database C. To calculate summary statistics D. To display relationships between entities Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
9. In data modeling, what is the term for the process of creating new features or variables from existing data attributes? A. Data Aggregation B. Data Wrangling C. Feature Engineering D. Data Transformation Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
10. Which data modeling approach is commonly used for representing data as a hierarchy with parent and child relationships? A. Relational Modeling B. Hierarchical Modeling C. Object-Oriented Modeling D. Entity-Relationship Modeling Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
