Database concepts nhvps rrn

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Across
  1. 3. A field linking one table to another.
  2. 5. Conflicting or mismatched data values.
  3. 6. An open-source relational database management system.
  4. 10. A rule that enforces data integrity in a database.
  5. 13. A constraint ensuring a column cannot have empty values.
  6. 14. A column in a table representing a data property.
  7. 15. The number of tuples (rows) in a relation.
  8. 18. Attributes used to uniquely identify records.
  9. 20. The core software that stores, retrieves, and manages data.
  10. 21. Unnecessary duplication of data.
  11. 25. Another term for a row in a relation.
  12. 26. An attribute or set of attributes that can uniquely identify records.
Down
  1. 1. The set of valid values an attribute can take.
  2. 2. A table in a database consisting of rows and columns.
  3. 4. A specific data item within a record.
  4. 7. A variable-length character data type.
  5. 8. A unique identifier for each record in a table.
  6. 9. A virtual table created from a query.
  7. 11. A candidate key not chosen as the primary key.
  8. 12. Safeguarding personal or sensitive information.
  9. 16. Definitions of the kind of values a column can hold.
  10. 17. A constraint ensuring all values in a column are distinct.
  11. 19. Measures to protect data from unauthorized access.
  12. 22. The number of attributes (columns) in a relation.
  13. 23. An organized collection of structured data.
  14. 24. A single row of data in a table.