Crossword Puzzle

123456
Across
  1. 3. A method of extracting specific data from database and save for future use.
  2. 4. Setting links between tables.
Down
  1. 1. An access data type.
  2. 2. A group of fields related to one topic.
  3. 5. A collection of records for single subject.
  4. 6. A field/key that contains the unique information.