3 Questions
What is metadata?
Data about data, including information about fields, display/format instructions, structure, security/access rules, triggers, and operational rules
What do null values represent in a database?
Missing or unknown data that cannot be evaluated by mathematical expressions
What is the purpose of a database?
To reflect changes in the world
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.
Test your knowledge on the fundamentals of databases with this quiz! From understanding the difference between data and information to the importance of metadata, this quiz covers key concepts necessary for building and managing a database. Sharpen your skills on data storage, displaying information through queries and reports, and ensuring your database is fit for its intended purpose. See how well you know the basics and challenge yourself to improve your understanding of databases.
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