sql data definition commands and manipulation commands

1234567891011121314
Across
  1. 4. constraints used to validate data in an attribute
  2. 5. returns the sum of all values for a given column
  3. 8. limits values to unique values
  4. 9. permanently deletes an index
  5. 11. permanently deletes a view
  6. 12. checks whether a attribute value is within range
  7. 13. defines a default value for a column
Down
  1. 1. restores data and their original values
  2. 2. checks whether a subquery returns any rows
  3. 3. ensures that a column wont have duplicate values
  4. 4. permanently saves data changes
  5. 6. modifies a tables definition
  6. 7. modifies attribute values in one/more table row
  7. 8. deletes one or more rows from a table
  8. 10. inserts row/s into a table
  9. 14. returns the average of all values for a given colu.