DDD Design
Presentation
•
Computers
•
12th Grade
•
Practice Problem
•
Hard
J Murray
Used 2+ times
FREE Resource
28 Slides • 30 Questions
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Multiple Choice
Which of the following best describes an end-user requirement in the context of database design?
A specific feature that the database must provide to meet user needs
A technical specification for how data is stored
A security protocol for database access
A backup schedule for database maintenance
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Open Ended
Why is it important to identify both end-user and functional requirements when designing a database?
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7
Multiple Choice
Which of the following best describes an entity in a database?
A specific example of a person or thing in a table
A characteristic or property of a table
A person, place, thing, event, or concept about which data is stored
A unique identifier for a row in a table
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Open Ended
Explain the difference between a primary key and a foreign key in the context of relational databases.
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11
Fill in the Blanks
Fill in the blank: If there is no natural primary key, a
12
Multiple Choice
A compound key is formed by combining two or more attributes. In the example of a Class entity, which attributes are combined to form the compound key?
studentID + subjectCode + teacherRef
subjectCode + teacherRef + columnID
teacherRef + columnID + studentID
subjectCode + columnID + studentID
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Multiple Select
Which of the following are valid attribute types in a database?
text
number
date
Boolean
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Open Ended
Describe two types of validation that can be applied to data entry in a database and explain their importance.
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Multiple Select
Which of the following are valid types of cardinality in relationships?
one-to-one
one-to-many
many-to-many
many-to-one
19
Multiple Choice
What does the cardinality of a relationship define in a database context?
The number of participants in the relationship
The type of entities involved
The attributes of each entity
The data type of the relationship
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Multiple Choice
Which example best illustrates a one-to-one relationship?
A School is managed by one Headteacher, and a Headteacher manages one School
A School employs many Teachers
Many Students study many Subjects
A Teacher teaches many Subjects
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Open Ended
Explain why direct many-to-many relationships cannot be implemented by a relational database system and how this issue can be resolved.
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Multiple Choice
What is the main purpose of creating an entity-occurrence diagram?
To identify the cardinality of the relationship between two entities
To list all attributes of entities
To show the data types of each entity
To create a database schema
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Fill in the Blanks
In an entity-occurrence diagram, each entity is shown as a tall
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Multiple Choice
Which type of relationship is shown between the School and Headteacher entities in the entity-occurrence diagram?
One-to-one
One-to-many
Many-to-many
Many-to-one
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Multiple Choice
Which of the following best describes the relationship between the School and Teacher entities as shown in the entity-occurrence diagram?
One-to-one
One-to-many
Many-to-many
Many-to-one
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Multiple Select
Which of the following statements are true about the entity-occurrence diagram involving Student and Subject entities?
Each student can be associated with multiple subjects.
Each subject can be associated with multiple students.
Each student can be associated with only one subject.
Each subject can be associated with only one student.
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Fill in the Blanks
Fill in the blank: The relationship between Student and Subject entities in the diagram is described as ___-to-___.
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Open Ended
Explain how the relationships between School, Headteacher, and Teacher entities are represented in entity-occurrence diagrams. What can you infer about the nature of these relationships?
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Open Ended
What is a compound key and how is it used in the context of database entities? Provide an example based on the information given.
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Multiple Select
Which of the following are indicated by an entity-relationship diagram?
The name of each entity
The name of the relationship between two entities
The cardinality of the relationship
The data types of each attribute
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Multiple Choice
What is the purpose of an entity-relationship diagram (ERD) in a system?
To summarize the relationships between entities
To store data permanently
To perform calculations
To display user interfaces
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Open Ended
Explain the use of crow’s feet notation in entity-relationship diagrams.
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Multiple Choice
How are entities, attributes, and relationships represented in an entity-relationship diagram according to the slides?
Entities: labelled rectangles, Attributes: labelled ovals, Relationships: labelled line
Entities: labelled ovals, Attributes: labelled rectangles, Relationships: labelled line
Entities: labelled lines, Attributes: labelled rectangles, Relationships: labelled ovals
Entities: labelled rectangles, Attributes: labelled lines, Relationships: labelled ovals
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Fill in the Blanks
Based on the database structure provided, which attributes are used as foreign keys in the Hotel and Booking entities?
Type answer...
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Open Ended
Describe the relationships between Resort, Hotel, Booking, and Customer as shown in the ER diagram.
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Multiple Choice
What is the purpose of an Entity Relationship Diagram in database design?
To represent the logical structure of a database
To write SQL queries
To store data physically
To create user interfaces
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Open Ended
How confident do you feel about identifying end-user and functional requirements of a database problem after this lesson?
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Multiple Choice
What are the two main types of requirements you should identify when designing a database for a problem?
End-user and functional requirements
Hardware and software requirements
Security and privacy requirements
Design and implementation requirements
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Open Ended
Explain the importance of query design in the context of databases. How does it impact the efficiency and effectiveness of data retrieval?
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