Across
- 2. Combining tuples from two relations
- 4. Relationship type involving three entities
- 7. Property that restricts unauthorized access to data
- 10. Combining entities and relationships into higher abstraction
- 12. Organized collection of related data stored electronically
- 14. Process of dividing entities into subgroups
- 19. Normal form that removes partial dependency
- 20. Attribute that uniquely identifies an entity
- 21. Language used to query relational databases
- 23. Constraint specifying mandatory participation
- 25. Removing duplicate tuples from a relation
Down
- 1. Collection of similar entities
- 3. Process of organizing data to reduce redundancy
- 5. Attribute that can have multiple values
- 6. Entity that cannot be uniquely identified by its own attributes
- 8. Entity that has a primary key and can exist independently
- 9. Software that manages and controls access to databases
- 11. Process of combining lower-level entities
- 13. Protocol that assigns timestamps to transactions
- 15. Operation to retrieve specific columns
- 16. Constraint specifying number of entities in a relationship
- 17. Property ensuring accuracy and consistency of data
- 18. Operation to retrieve specific rows
- 22. Situation where two transactions wait indefinitely
- 24. First normal form removes repeating groups