Unit 1 crossword puzzle

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Across
  1. 2. Restoring the database after failure 8
  2. 4. Software that manages databases 4
  3. 7. Association between entities 12
  4. 8. Relationship with three entities 7
  5. 10. Total or partial involvement in a relationship 13
  6. 12. Logical structure or blueprint of a database 6
  7. 15. Number of entities in a relationship 6
  8. 20. Unnecessary duplication of data 10
  9. 22. Not every superclass entity belongs to a subclass 7
  10. 23. Key with more than one attribute 9
  11. 25. Attribute with many values 11
  12. 28. Data ___, stores definitions of data 10
  13. 29. Language for managing transactions 3
  14. 32. Attribute calculated from another 7
  15. 35. Ability to change one level without affecting another 12
  16. 37. Raw facts and figures 4
  17. 38. Also called a relation 5
  18. 39. Snapshot of data in a database at a given moment 8
  19. 43. Language used to manipulate data 3
  20. 45. Accuracy and consistency of data 9
Down
  1. 1. Bottom-up process of combining entities 14
  2. 3. ___ integrity for foreign keys 11
  3. 5. Top-down process of defining subclasses 14
  4. 6. Entity without its own primary key 4
  5. 9. Attribute that is atomic 6
  6. 11. Data about data 8
  7. 13. Treating a relationship as an entity 11
  8. 14. Number of entity instances in a relationship 11
  9. 16. A real-world object in ER model 6
  10. 17. Constraint disallowing empty values 7
  11. 18. Attribute made of sub-parts 9
  12. 19. Key referencing another table 7
  13. 21. Minimal possible super key 9
  14. 24. A request for information from a database 5
  15. 26. Virtual table or user-specific window into data 4
  16. 27. Constraint preventing duplicates 6
  17. 30. Constraint validating a condition 5
  18. 31. Main key of a table 7
  19. 33. Value assigned when none is given 7
  20. 34. Language for granting and revoking access 3
  21. 36. Language used to define schema 3
  22. 40. Standard language for relational databases 3
  23. 41. Property describing an entity 9
  24. 42. Hiding complex details from users 11
  25. 44. Entity with its own primary key 6