nlOUG - Crossword Puzzle Day - Oracle

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Across
  1. 4. A lock on a single row of table.
  2. 7. A logical entity in the database instance memory that represents the state of a current user login to a database
  3. 8. An operation that retrieves data from tables or views.
  4. 10. function that replaces null value
  5. 11. Action that ends a database transaction and makes permanent all changes performed in the transaction.
  6. 13. Optional schema object associated with a nonclustered table, table partition, or table cluster.
  7. 14. JavaScript Object Notation
  8. 16. The ratio of distinct values to the number of table rows.
  9. 18. A statement that retrieves data from multiple tables specified in the FROM clause
Down
  1. 1. A copy of data
  2. 2. An integrity constraint that requires each value in a column or set of columns to match a value in the unique or primary key for a related table.
  3. 3. Procedural language SQL.
  4. 5. Vertical space in a table that represents a domain of data
  5. 6. SQL whose complete text is not known until run time.
  6. 9. A join that returns rows from the left side of the predicate for which there are no corresponding rows on the right side of the predicate.
  7. 12. A schema object that always returns a single value
  8. 15. Absence of a value in a column of a row.
  9. 17. A globally unique address for a row in a database.