In data modeling, what is the term for the process of representing data as objects and their interactions in software applications?
A. Hierarchical Modeling
B. Relational Modeling
C. Object-Oriented Modeling
D. Entity-Relationship Modeling
What is the primary purpose of a decision tree model in data modeling?
A. To represent the structure of a database
B. To predict outcomes
C. To visualize data relationships
D. To calculate summary statistics
Which data modeling approach represents data as a collection of attributes and their dependencies in a directed acyclic graph?
A. Relational Modeling
B. Bayesian Network Modeling
C. Object-Oriented Modeling
D. Entity-Relationship Modeling
In data modeling, what is the term for the process of transforming data into a format suitable for storage and retrieval?
A. Data Aggregation
B. Data Wrangling
C. Data Encoding
D. Data Integration
What is the primary goal of clustering in data modeling?
A. To increase model complexity
B. To group similar data points
C. To improve model accuracy
D. To calculate summary statistics
What is the primary objective of feature selection in data modeling?
A. To increase model complexity
B. To improve model accuracy
C. To reduce dimensionality
D. To represent data relationships
In data modeling, what is the term for the process of filling in missing data values with estimated or imputed values?
A. Data Aggregation
B. Data Cleaning
C. Data Imputation
D. Data Transformation
Which data modeling approach represents data as a collection of objects with their attributes and behaviors?
A. Hierarchical Modeling
B. Relational Modeling
C. Object-Oriented Modeling
D. Entity-Relationship Modeling
What is the primary purpose of a Data Dictionary in data modeling?
A. To visualize the data distribution
B. To represent data relationships
C. To define data attributes and properties
D. To create summary statistics
In data modeling, what is the term for the process of selecting the most relevant data attributes for model building?
A. Data Aggregation
B. Data Cleaning
C. Feature Selection
D. Data Transformation
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
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
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
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
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
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
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
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
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
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
