How to Set Not Null in MS Access

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Setting a field to NOT NULL in Microsoft Access ensures that it cannot contain empty or null values. Here's how to set this constraint:

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1. Open your database.
2. Go to the 'Navigation Pane' and right-click the table you want to modify. Select 'Design View'.
3. Click the field you want to set as NOT NULL.
4. In the 'Field Properties' section at the bottom, look for the 'Required' property.
5. Click the drop-down arrow and set the 'Required' property to 'Yes'.
6. Click the save icon to save your changes.