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Chapter 3. Managing the Consistency, For... > Validating Data - Pg. 100

Managing the Consistency, Format, and Integrity of Your Data 100 4. 5. In the middle box, which lists the fields from the MarketingCampaigns table, double-click LaunchDate. Notice that the Expression Builder places the field name, wrapped in brackets, in the text box at the top. In the row of buttons for the different operators (beginning with the plus sign), click the less than sign ().