Database 3 crossword

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Across
  1. 3. a question that is used to retrieve selected information from a database
  2. 6. (___) Query Language
  3. 7. Query By (__) an alternative to querying using SQL - simpler for novice
  4. 8. the second clause used in an SQL query
Down
  1. 1. used by queries to filter large data sets
  2. 2. the first word (clause) used in an SQL query
  3. 4. the third clause used in an SQL query allowing criteria to be entered
  4. 5. an SQL query my use this to mean 'everything'!