Podcast
Questions and Answers
What is the first step to create a relational schema from a class diagram?
What is the first step to create a relational schema from a class diagram?
- Define referential integrity constraints
- Create new tables to represent many-to-many relationships
- Choose a primary key for each class
- Create a table for each class (correct)
How are one-to-many relationships represented in a relational database schema?
How are one-to-many relationships represented in a relational database schema?
- By adding foreign keys (correct)
- By using the primary key of the parent table as the primary key of the child tables
- Using internally invented keys
- By combining all tables into a single table
In database normalization, what is ensured by the second normal form?
In database normalization, what is ensured by the second normal form?
- Every non-key attribute is functionally dependent on the primary key (correct)
- No non-key attribute is functionally dependent on any non-key attribute
- Every attribute value has a one-to-one correspondence
- No repeating attributes or groups of attributes in a table
What is the purpose of using separate tables to represent child classes when dealing with classification hierarchies?
What is the purpose of using separate tables to represent child classes when dealing with classification hierarchies?
What happens if a new row contains an unknown foreign key value in a relational database schema?
What happens if a new row contains an unknown foreign key value in a relational database schema?
Which step helps evaluate schema quality by ensuring uniqueness and lack of redundant data?
Which step helps evaluate schema quality by ensuring uniqueness and lack of redundant data?
What is the purpose of enforcing referential integrity in a relational database?
What is the purpose of enforcing referential integrity in a relational database?
What should be done if a primary key is deleted or modified in a relational database schema?
What should be done if a primary key is deleted or modified in a relational database schema?
What ensures that no repeating attributes or groups of attributes exist in a table according to normalization standards?
What ensures that no repeating attributes or groups of attributes exist in a table according to normalization standards?
What technique aims to minimize redundancy and ensure database schema quality?
What technique aims to minimize redundancy and ensure database schema quality?
What technique is used to ensure that tables generated from the RMO class diagram do not violate normalization forms?
What technique is used to ensure that tables generated from the RMO class diagram do not violate normalization forms?
Which database architecture type offers fault tolerance and load balancing but requires synchronization techniques?
Which database architecture type offers fault tolerance and load balancing but requires synchronization techniques?
What is a main challenge in designing an interface between persistent classes and the RDBMS?
What is a main challenge in designing an interface between persistent classes and the RDBMS?
Which technique allows schema designers to define new data types as classes in Object DBMS?
Which technique allows schema designers to define new data types as classes in Object DBMS?
What is a characteristic of single database servers?
What is a characteristic of single database servers?
Which system modeling technique captures status conditions of objects and behavioral constraints of system classes?
Which system modeling technique captures status conditions of objects and behavioral constraints of system classes?
What is a common limitation of hybrid object-relational databases?
What is a common limitation of hybrid object-relational databases?
What is the main purpose of UML deployment architectural notation in Web-based systems?
What is the main purpose of UML deployment architectural notation in Web-based systems?
What defines the storage format and content constraints for variables or database attributes?
What defines the storage format and content constraints for variables or database attributes?
What type of databases can be organized as single, replicated, partitioned, or federated server architectures?
What type of databases can be organized as single, replicated, partitioned, or federated server architectures?
What is the main difference between user interfaces and system interfaces?
What is the main difference between user interfaces and system interfaces?
Which design approach emphasizes understanding user styles and iterative development based on user requirements?
Which design approach emphasizes understanding user styles and iterative development based on user requirements?
What contributed significantly to the evolution of Human-Computer Interaction (HCI) according to the text?
What contributed significantly to the evolution of Human-Computer Interaction (HCI) according to the text?
What are examples of metaphors for Human-Computer Interaction (HCI) mentioned in the text?
What are examples of metaphors for Human-Computer Interaction (HCI) mentioned in the text?
Which principle suggests that control appearance should imply its functionality in interface design?
Which principle suggests that control appearance should imply its functionality in interface design?
How are dialog designs typically documented according to the text?
How are dialog designs typically documented according to the text?
What is a key principle in web design mentioned in the text?
What is a key principle in web design mentioned in the text?
In designing dialogs, what involves refining forms and iteratively modifying designs to meet user needs effectively?
In designing dialogs, what involves refining forms and iteratively modifying designs to meet user needs effectively?
Which systems are crucial for storing, retrieving, and managing data according to the text?
Which systems are crucial for storing, retrieving, and managing data according to the text?
What does HCI stand for based on the text?
What does HCI stand for based on the text?
What is the technology of choice for newly designed systems when it comes to databases?
What is the technology of choice for newly designed systems when it comes to databases?
Which language is the standard developed by the ODMG for defining the structure and content of an object database?
Which language is the standard developed by the ODMG for defining the structure and content of an object database?
How do Object Database Management Systems (ODBMSs) represent associations among objects?
How do Object Database Management Systems (ODBMSs) represent associations among objects?
In a many-to-many association, how are the associations represented in Object Definition Language (ODL)?
In a many-to-many association, how are the associations represented in Object Definition Language (ODL)?
What is the basis for representing relationships among tables in relational databases?
What is the basis for representing relationships among tables in relational databases?
Which type of key uniquely identifies a row in a table in a relational database?
Which type of key uniquely identifies a row in a table in a relational database?
How do object database schemas represent associations among objects?
How do object database schemas represent associations among objects?