When editing fields in the structure editor, notice that the font of some field names may be underlined, bolded, or italicized. If a field is underlined, that means that it is the primary key. If it is bolded, that means the field has some sort of indexing. If a field is italicized, that means its “Invisible” setting is enabled.



In the Example table above, the “ID” field is the primary key (with automatic indexing), the “Name” field has B-tree indexing, and the “DOB” field is set to be Invisible. Note that primary key fields are usually both underlined and bolded.