When you import data with destination table creation, you can manage this table's fields.
Use the context menu to Add/Edit/Drop a field.
Selecting Add field or Edit field context menu item opens the field editor that allows you to view/edit the properties of the destination table fields.
Use the Column edit box to set the field name. Note that the name of the field must be unique among all the field names in the table.
The Type tab defines the type of the field data.
Defines the size of the field value.
For numeric and decimal types you need to define the number of decimal to the right of the decimal point.
Define this option value if you need inserted records to get specified value.
Define character set and collation at the appropriate fields.
Check this option to prevent the entry of NULL or unknown values in column.