Podcast
Questions and Answers
What is a foreign key within a tuple used for?
What is a foreign key within a tuple used for?
- To contain values of the referenced tuple's primary key (correct)
- To uniquely identify each tuple in the database
- To perform join operations with other tuples
- To store attributes of the tuple
In relational theory, which mathematical concept is utilized for data management?
In relational theory, which mathematical concept is utilized for data management?
- Set theory (correct)
- Graph theory
- Linear algebra
- Calculus
What is the purpose of a data model in database management?
What is the purpose of a data model in database management?
- To design efficient storage strategies
- To execute complex queries on the database
- To logically organize real world objects, their constraints, and relationships (correct)
- To create user interfaces for database interaction
Which concept represents the behavior of an object in an object-oriented data model?
Which concept represents the behavior of an object in an object-oriented data model?
What does encapsulation refer to in object-oriented data modeling?
What does encapsulation refer to in object-oriented data modeling?
What is an attribute in an object-oriented data model?
What is an attribute in an object-oriented data model?
What is the most widely deployed model for storing data in databases?
What is the most widely deployed model for storing data in databases?
Which data model provides a convenient graphical representation for viewing data, relationships, and constraints in database design?
Which data model provides a convenient graphical representation for viewing data, relationships, and constraints in database design?
What type of language enables users to access or manipulate data by specifying only what data are needed, without specifying how to get that data?
What type of language enables users to access or manipulate data by specifying only what data are needed, without specifying how to get that data?
Which subsystem of a database system provides the interface between low-level data in the database and application programs/queries?
Which subsystem of a database system provides the interface between low-level data in the database and application programs/queries?
What is a language for specifying the database schema and other properties of the data in a database system?
What is a language for specifying the database schema and other properties of the data in a database system?
Which type of language compiles and executes Data-Definition Language (DDL) and Data-Manipulation Language (DML) statements in a database system?
Which type of language compiles and executes Data-Definition Language (DDL) and Data-Manipulation Language (DML) statements in a database system?
What are data models that show the relationships between data records within a file structure called?
What are data models that show the relationships between data records within a file structure called?
Which aspect is an advantage of the hierarchical data model?
Which aspect is an advantage of the hierarchical data model?
What is a disadvantage of the hierarchical data model?
What is a disadvantage of the hierarchical data model?
Which type of data model provides a logical link between parent segments and child segments?
Which type of data model provides a logical link between parent segments and child segments?
What aspect makes the hierarchical data model suitable for databases with a large number of 1:N relationships?
What aspect makes the hierarchical data model suitable for databases with a large number of 1:N relationships?
Which term refers to the structures and access techniques provided by a specific DBMS?
Which term refers to the structures and access techniques provided by a specific DBMS?
