Changing field definitions
After you define a field, you can change it. To change the definitions of related fields, make the changes in the related table or file.
Important  Changing a field definition can change or delete data already stored in the field. For example, changing a field to a calculation field replaces existing data with a calculated value. Deleting a field definition erases any data stored in the field.
Topics in this section
Changing field names
Duplicating field definitions
Changing field types
Changing calculation formulas
Changing summary fields
Reordering field definitions
Deleting table definitions, field definitions, and data