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