DBMS Crossword Puzzle

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Across
  1. 4. The oldest DB model is _______.
  2. 6. ____________ operations do not preserve non-matched tuples.
  3. 8. Which of the following is the best way to represent the attributes in a large db?
  4. 9. The ability to query data, as well as insert, delete, and alter tuples, is offered by _____.
  5. 10. If you want to group the records in the abc database, you could use the Job code as the_______
Down
  1. 1. key __________ is a set of one or more attributes taken collectively to uniquely identify a record.
  2. 2. Which of the following functions construct histograms and use buckets for ranking?
  3. 3. Data item characteristics that are important in data management include________
  4. 5. Who proposed the relational model?
  5. 7. In which of the following formats data is stored in the database management system?