3 Questions
Which of the following statements is true about attributes?
Attributes can be simple or composite
Which of the following is true about multi-valued attributes?
They should not be implemented in RDBMS.
What are derived attributes?
Attributes that are calculated from other attributes.
Study Notes
- Attributes can be required or optional.
- Domains are sets of possible values for attributes.
- Primary keys uniquely identify entity instances.
- Composite identifiers are made up of more than one attribute.
- Attributes can be simple or composite.
- Single-valued attributes can only have one value.
- Multi-valued attributes have many values but should not be implemented in RDBMS.
- Implementing multi-valued attributes involves creating new attributes or entities.
- Derived attributes are calculated from other attributes.
- Computed attributes can be simple or complex.
Test your knowledge of database design with this quiz on entity attributes. From understanding the difference between required and optional attributes to identifying primary keys and composite identifiers, this quiz covers the essentials. You'll also learn about domains, multi-valued attributes, and computed attributes. Sharpen your database design skills and take the quiz now.
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