Podcast
Questions and Answers
Which of the following best describes data modeling?
Which of the following best describes data modeling?
- Creating an abstraction of a more complex real-world object or event
- Creating a database for various users
- Creating a specific data model for a determined problem domain (correct)
- Creating a simple representation of complex real-world data structures
What is the importance of data modeling?
What is the importance of data modeling?
- Facilitates communication
- Provides an abstraction for the creation of a good database
- Gives various views of the database
- All of the above (correct)
How can data models be classified?
How can data models be classified?
- By their level of abstraction (correct)
- By their size
- By their implementation language
- By their complexity
Which level of abstraction does the physical model operate at?
Which level of abstraction does the physical model operate at?
What is the main focus of the conceptual model?
What is the main focus of the conceptual model?
What is the main characteristic of the internal schema?
What is the main characteristic of the internal schema?
What is the purpose of the physical model?
What is the purpose of the physical model?
Which model was developed to manage large amounts of data for complex manufacturing projects?
Which model was developed to manage large amounts of data for complex manufacturing projects?
Which model allows a record to have more than one parent?
Which model allows a record to have more than one parent?
Which model uses a graphical representation to model database components?
Which model uses a graphical representation to model database components?
Which model allows a record to have more than one parent?
Which model allows a record to have more than one parent?
Which model contains data and their relationships in a single structure known as an object?
Which model contains data and their relationships in a single structure known as an object?
Which model promotes structural independence using independent tables?
Which model promotes structural independence using independent tables?
Which model has limited constraint representation and limited relationship representation?
Which model has limited constraint representation and limited relationship representation?
Which model represents a global view of the entire database by the entire organization?
Which model represents a global view of the entire database by the entire organization?
Which of the following is NOT one of the basic building blocks of a data model?
Which of the following is NOT one of the basic building blocks of a data model?
What is the purpose of business rules in an organization?
What is the purpose of business rules in an organization?
Which of the following is a source for discovering business rules?
Which of the following is a source for discovering business rules?
What is the role of naming conventions in data modeling?
What is the role of naming conventions in data modeling?
Which model was created to represent complex data relationships effectively?
Which model was created to represent complex data relationships effectively?
Which model uses a graphical representation to model database components?
Which model uses a graphical representation to model database components?
Which model allows a record to have more than one parent?
Which model allows a record to have more than one parent?
Which model promotes data sharing and conceptual simplicity with its parent/child relationship?
Which model promotes data sharing and conceptual simplicity with its parent/child relationship?
Which model contains data and their relationships in a single structure known as an object?
Which model contains data and their relationships in a single structure known as an object?
Which model is an SQL-based relational database application?
Which model is an SQL-based relational database application?
Which model operates at the lowest level of abstraction and describes the way data is saved on storage media?
Which model operates at the lowest level of abstraction and describes the way data is saved on storage media?
What type of independence is achieved when changes in the physical model do not affect the internal model?
What type of independence is achieved when changes in the physical model do not affect the internal model?
Which model represents a global view of the entire database by the entire organization?
Which model represents a global view of the entire database by the entire organization?
What is the main focus of the logical model?
What is the main focus of the logical model?
Which type of data model is an abstraction of a complex real-world data environment?
Which type of data model is an abstraction of a complex real-world data environment?
What type of independence is achieved when changing the internal model does not affect the conceptual model?
What type of independence is achieved when changing the internal model does not affect the conceptual model?
Which model allows a record to have more than one parent?
Which model allows a record to have more than one parent?
Which model promotes structural independence using independent tables?
Which model promotes structural independence using independent tables?
Which model uses a graphical representation to model database components?
Which model uses a graphical representation to model database components?
Which model has limited constraint representation and limited relationship representation?
Which model has limited constraint representation and limited relationship representation?
What is the main focus of the conceptual model?
What is the main focus of the conceptual model?
Which level of abstraction does the physical model operate at?
Which level of abstraction does the physical model operate at?
Which of the following is NOT a basic building block of a data model?
Which of the following is NOT a basic building block of a data model?
What is the purpose of business rules in an organization?
What is the purpose of business rules in an organization?
Which of the following is NOT a source for discovering business rules?
Which of the following is NOT a source for discovering business rules?
How do nouns translate into data model components?
How do nouns translate into data model components?
What is the main purpose of naming conventions in data modeling?
What is the main purpose of naming conventions in data modeling?
Which of the following examples represents a one-to-many relationship?
Which of the following examples represents a one-to-many relationship?
Which one of the following is NOT a reason why data modeling is important?
Which one of the following is NOT a reason why data modeling is important?
What is the purpose of data modeling?
What is the purpose of data modeling?
Which of the following is NOT a level of abstraction at which data models can be classified?
Which of the following is NOT a level of abstraction at which data models can be classified?
What is a data model?
What is a data model?
Which model allows a record to have more than one parent?
Which model allows a record to have more than one parent?
What are business rules and how do they influence database design?
What are business rules and how do they influence database design?
