primary key

noun

In the design of a database table, the primary key (abbreviated PK) is selected among the non-empty set of candidate keys. The PK is a column (or an irreducible group of columns) able to identify every row of the table.

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Meanings

nounprimary key (plural primary keys)

plural primary keys

  1. computingIn the design of a database table, the primary key (abbreviated PK) is selected among the non-empty set of candidate keys. The PK is a column (or an irreducible group of columns) able to identify every row of the table.

Translations

Chinese Mandarin 主鍵 /主键, 主碼 /主码
  • 主鍵 /主键 (zhǔjiàn)key in database table
  • 主碼 /主码 (zhǔmǎ)key in database table
Czech primární klíč
  • primární klíčkey in database table
Finnish pääavain
  • pääavainkey in database table
French clé primaire
  • clé primairekey in database table
German Primärschlüssel
  • Primärschlüsselkey in database table
Greek πρωτεύον κλειδί
  • πρωτεύον κλειδί (protévon kleidí)key in database table
Hungarian elsődleges kulcs
  • elsődleges kulcskey in database table
Japanese 主キー
  • 主キー (shu-kī)key in database table
Polish klucz główny, klucz podstawowy
  • klucz głównykey in database table
  • klucz podstawowykey in database table
Romanian cheie primară
  • cheie primarăkey in database table
Russian перви́чный ключ
  • перви́чный ключ (pervíčnyj ključ)key in database table
Swedish primärnyckel
  • primärnyckelkey in database table
Turkish birincil anahtar
  • birincil anahtarkey in database table
Cite this entry
APA

primary key. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/primary%20key

MLA

“primary key.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/primary%20key. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “primary key,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/primary%20key.

Source: primary key on Wiktionary, CC BY-SA 4.0.