What is the difference between a column constraint and a table constraint?

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What is the difference between a column constraint and a table constraint?

  1. What is the difference between a column constraint and a table constraint?
  1. What is a recursive join?
  1. Explain the difference between an ORDER BY clause and a GROUP BY clause.
  1. What is a CROSS JOIN? Give an example of its syntax.
  1. What three join types are included in the OUTER JOIN classification?
  1. What is a correlated subquery? Give an example.
  1. What is a subquery, and what are its basic characteristics?
  1. What is a trigger, and what is its purpose? Give an example.
  1. What is a stored procedure, and why is it particularly useful? Give an example.

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