I tried to use the check box field when updating a table, but every time I press it it updates the table.  Is it a yes or no field.  When remove the check mark, it shouldn't update the table, correct?

Sorry I don't total understand the check mark field

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Reply from Richard Rost:

Check marks are the default object that Access links to Y/N fields when you put them on a form. Generally they're linked to the table field, yes, unless you create an unbound check box.