Question No 2 - DBMS

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Across
  1. 2. A unique identifier for a database record (Primary ___). (7 letters)
  2. 4. A language used to communicate with databases (___ Query Language). (3 letters)
  3. 5. A database model based on tables, rows, and columns (___ model). (8 letters)
Down
  1. 1. A process of organizing data to reduce redundancy (___ form). (11 letters)
  2. 3. A set of rules to maintain data integrity (Referential ___). (9 letters)
  3. 6. A storage structure used to improve query performance (Database ___). (5 letters)