Chapter 1 and 2

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Across
  1. 2. It is a clause that corresponds to the projection operation of relational algebra.
  2. 4. Which predicate is used to check for NULL values?
  3. 5. One of the string operations supported by SQL.
  4. 6. Which clause is used for renaming relations and attributes in SQL.
  5. 7. Which keyword is inserted after SELECT to force the elimination of duplicates?
Down
  1. 1. At which level application programs hide details of data types?
  2. 2. Type of user who write SQL queries to select/insert/delete/update Data.
  3. 3. It is an association among entities.