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Yes/No queries allow you to flag certain records for a particular purpose. Let's say it is summer, and we need a list of our SalesReps who have asked for time off. If you open up your SalesReps table and scroll to the right, you can see the Flag field. Let's mark a number of our reps who want a vacation. Pick about ten, or so. Then close the table. Now click once on our SalesRep tables, so it's selected. Click on the Create cab and go to Query Design. Add the SalesReps and close the window,. Stretch the bottom down so you can see as many fields as possible.
Double-click on EmpID LastName, FirstName, StartDate and Flag. Let's sort ascending by StartDate, so that we can schedule leave by seniority and under Flag, set the criteria to Yes. Yes means a field has a check in it. No would mean the box is empty. View your results, and now you have a list of employees who would like leave in order by seniority. The Yes/No query allows you to take advantage of Flags and Either/Or fields in your database.
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