Podcast
Questions and Answers
What is the main purpose of an Entity Relationship (ER) Model?
What is the main purpose of an Entity Relationship (ER) Model?
- To manage user interfaces for databases
- To perform mathematical operations on data
- To provide a blueprint of a database (correct)
- To visualize the physical implementation of a database
Which type of data model focuses on describing data relationships, semantics, and constraints?
Which type of data model focuses on describing data relationships, semantics, and constraints?
- Network Model
- Entity Relationship Model (correct)
- Relational Data Model
- Object Oriented Model
What does an ER diagram primarily represent?
What does an ER diagram primarily represent?
- Logical structure of a database (correct)
- User access permissions
- Software code implementation
- Physical storage of data files
In the context of database design, what is the purpose of a database schema diagram?
In the context of database design, what is the purpose of a database schema diagram?
What are the three main components of an ER diagram?
What are the three main components of an ER diagram?
Which of the following best describes an entity in the context of an ER diagram?
Which of the following best describes an entity in the context of an ER diagram?
What is the difference between a strong entity and a weak entity in an ER model?
What is the difference between a strong entity and a weak entity in an ER model?
What best describes an Entity Type in the context of a database?
What best describes an Entity Type in the context of a database?
What is the approach used for mapping M:N relationship types in ER-to-Relational mapping?
What is the approach used for mapping M:N relationship types in ER-to-Relational mapping?
Which type of attributes are not present in the mapping process according to the text?
Which type of attributes are not present in the mapping process according to the text?
What is the primary focus of mapping regular entity types in ER-to-Relational mapping?
What is the primary focus of mapping regular entity types in ER-to-Relational mapping?
Which approach is NOT mentioned for mapping binary 1:1 relationship types in the provided text?
Which approach is NOT mentioned for mapping binary 1:1 relationship types in the provided text?
