C175 - Data Management Foundations |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
PA exam with correct answers |||\\\ |||\\\ |||\\\ |||\\\
What is a broad definition of data? - correct answer✔✔*Raw facts* that are captured on
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printed or digital media |||\\\ |||\\\ |||\\\
What are data? - correct answer✔✔Facts that are collected and stored in a database system
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What is a determining characteristic of unstructured data? - correct answer✔✔It does not
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follow a data model. |||\\\ |||\\\ |||\\\
Which item represents unstructured data? - correct answer✔✔Training Video Content
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Which is true about flat files? - correct answer✔✔They contain no internal hierarchical
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organization.
Which technology has no internal hierarchy? - correct answer✔✔Flat files
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How were data retrieved before database management systems? - correct
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answer✔✔Sequentially from simple files |||\\\ |||\\\ |||\\\
What is the *uniquely identifiable element* about which data can be categorized in an entity-
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relationship diagram? - correct answer✔✔Entity types |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which classification is correct for the box marked "Quantity" in the given entity-relationship
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diagram? - correct answer✔✔Intersection data |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, Which data classification is an entity? - correct answer✔✔event
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What is the entity-relationship diagram about a car rental agency showing? - correct
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answer✔✔One manufacturer created at least one of the agency's cars. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
A salesperson is authorized to sell 12 products; a product can be sold by 10 salespersons.
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Which kind of binary relationship is described in this example? - correct answer✔✔Many-to-
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many
Which relationship does the cardinality in the diagram represent? - correct answer✔✔Many
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customers to many products |||\\\ |||\\\ |||\\\
How is the cardinality of the customers misrepresented? - correct answer✔✔There are many
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customers, but the cardinality indicates one customer. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the correct way to read the modality on the right side of the association? - correct
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answer✔✔A minimum of zero customers |||\\\ |||\\\ |||\\\ |||\\\
What is the modality of the product? - correct answer✔✔At least one
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Which kind of relationship does this diagram depict? - correct answer✔✔Unary one-to-one
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Which kind of relationship does this diagram depict? - correct answer✔✔Unary one-to-many
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Which three kinds of rules for *referential integrity* are provided by modern relational
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database management systems? - correct answer✔✔Insert
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Delete
PA exam with correct answers |||\\\ |||\\\ |||\\\ |||\\\
What is a broad definition of data? - correct answer✔✔*Raw facts* that are captured on
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
printed or digital media |||\\\ |||\\\ |||\\\
What are data? - correct answer✔✔Facts that are collected and stored in a database system
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is a determining characteristic of unstructured data? - correct answer✔✔It does not
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
follow a data model. |||\\\ |||\\\ |||\\\
Which item represents unstructured data? - correct answer✔✔Training Video Content
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which is true about flat files? - correct answer✔✔They contain no internal hierarchical
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
organization.
Which technology has no internal hierarchy? - correct answer✔✔Flat files
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How were data retrieved before database management systems? - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔Sequentially from simple files |||\\\ |||\\\ |||\\\
What is the *uniquely identifiable element* about which data can be categorized in an entity-
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relationship diagram? - correct answer✔✔Entity types |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which classification is correct for the box marked "Quantity" in the given entity-relationship
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
diagram? - correct answer✔✔Intersection data |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, Which data classification is an entity? - correct answer✔✔event
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the entity-relationship diagram about a car rental agency showing? - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔One manufacturer created at least one of the agency's cars. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
A salesperson is authorized to sell 12 products; a product can be sold by 10 salespersons.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which kind of binary relationship is described in this example? - correct answer✔✔Many-to-
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
many
Which relationship does the cardinality in the diagram represent? - correct answer✔✔Many
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
customers to many products |||\\\ |||\\\ |||\\\
How is the cardinality of the customers misrepresented? - correct answer✔✔There are many
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
customers, but the cardinality indicates one customer. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the correct way to read the modality on the right side of the association? - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔A minimum of zero customers |||\\\ |||\\\ |||\\\ |||\\\
What is the modality of the product? - correct answer✔✔At least one
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which kind of relationship does this diagram depict? - correct answer✔✔Unary one-to-one
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which kind of relationship does this diagram depict? - correct answer✔✔Unary one-to-many
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which three kinds of rules for *referential integrity* are provided by modern relational
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
database management systems? - correct answer✔✔Insert
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Delete
