Ayuda de LibreOffice 7.3
Specifies a field in the table to be used as a primary key.
Select to create a primary key. Add a primary key to every database table to uniquely identify each record. For some database systems within LibreOffice, a primary key is mandatory for editing the tables.
Select to automatically add a primary key as an additional field.
Select to use an existing field with unique values as a primary key.
Seleccione el nombre del campo.
Select to automatically insert a value and increment the field's value for each new record. The database must support automatic incrementation in order to use the Auto value feature.
Seleccione la opción para crear una clave principal a partir de una combinación de varios campos.
Select a field and click > to add it to the list of primary key fields.
Select a field and click < to remove it from the list of primary key fields. The primary key is created as a concatenation of the fields in this list, from top to bottom.