Töfluleiðarvísir - Setja aðallykil

Specifies a field in the table to be used as a primary key.

Búa til aðallykil

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.

Bæta sjálfkrafa við aðallykil

Select to automatically add a primary key as an additional field.

Nota svið sem er þegar til sem aðallykil

Select to use an existing field with unique values as a primary key.

Nafn svæðis

Select the field name.

Sjálfvirkt gildi

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.

Define primary key by several fields

Select to create a primary key from a combination of several existing fields.

Tiltækir reitir

Select a field and click > to add it to the list of primary key fields.

>

Click to move the selected field(s) to the box that the arrow is pointing to.

<

Click to move the selected field(s) to the box that the arrow is pointing to.

Svið aðalykils

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.

Töfluleiðarvísir - Búa til töflu

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