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What does an entity represent in a data model?
What does an entity represent in a data model?
- Rules and limitations that define values in the data model
- Connections between different types of data
- Real-world objects or concepts for which data is stored (correct)
- Characteristics that describe the entities
What is the purpose of attributes in a data model?
What is the purpose of attributes in a data model?
- Establish relationships between entities
- Provide details about the data within each entity (correct)
- Define allowable values and relationships within the data model
- Organize data into tables with rows and columns
How do relationships contribute to a data model?
How do relationships contribute to a data model?
- Define the allowable values and relationships within the model
- Provide rules and limitations for data interactions
- Organize data into tables with rows and columns
- Indicate how entities are related to each other (correct)
What do constraints in a data model primarily ensure?
What do constraints in a data model primarily ensure?
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In which type of data model are relationships between tables established using keys?
In which type of data model are relationships between tables established using keys?
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What is the purpose of the Entity-Relationship Model in database design?
What is the purpose of the Entity-Relationship Model in database design?
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Which data model represents data with objects and methods for operation on the data?
Which data model represents data with objects and methods for operation on the data?
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Why is consistency and integrity important in data modeling?
Why is consistency and integrity important in data modeling?
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What is the key benefit of understanding the structure of data through a data model?
What is the key benefit of understanding the structure of data through a data model?
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Which model extends the hierarchical model by allowing records to have multiple parent and child records?
Which model extends the hierarchical model by allowing records to have multiple parent and child records?
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