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Questions and Answers
What is metadata?
What is metadata?
- Processed data that is meaningful
- Data about data, including information about fields, display/format instructions, structure, security/access rules, triggers, and operational rules (correct)
- Raw, unprocessed information
- An organized collection of related data with inherent meaning
What do null values represent in a database?
What do null values represent in a database?
- Processed data that is meaningful
- An organized collection of related data with inherent meaning
- A random assortment of data
- Missing or unknown data that cannot be evaluated by mathematical expressions (correct)
What is the purpose of a database?
What is the purpose of a database?
- To reflect changes in the world (correct)
- To store random assortments of data
- To display information through queries and reports
- All of the above
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Study Notes
- Data is raw, unprocessed information.
- Metadata is "data about data" and includes information about fields, display/format instructions, structure, security/access rules, triggers, and operational rules.
- Information is processed data that is meaningful.
- Null values represent missing or unknown data and cannot be evaluated by mathematical expressions.
- A database is an organized collection of related data with inherent meaning.
- A random assortment of data is not a database.
- A database reflects changes in the world and is fit for its intended purpose.
- Data values are stored in a database.
- Information can be displayed through queries and reports.
- Someone will use the database.
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