Data World

Exam 70-461 Notes – Set Theory

Posted by Pramod Singla on March 23, 2017


  1. Ordered list of returned result set is called Cursor.

  2. Without “order by” clause query doesn’t return results in particular order even if clustered index is there.

  3. Standard SQL must have “Select” and “have” whereas T-SQL can work with only “Select”

  4. “dbo”.”order” standard where as [dbo].[order] is Microsoft format.

  5. T-SQL is based upon SQL which in turn based upon relational model which further is based upon set theory and predicate logic.

         T-SQL<- SQL <- relational model<- set theory and predicate logic.

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