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