main key

[/meɪn kiː/]
nounpl: main keys
chave principal
1. The primary or most important key used to unlock or access something
The main key to the office building is kept in a secure location.
A chave principal do prédio do escritório é guardada em um local seguro.
2. In database systems, a field or set of fields that uniquely identifies each record in a table
The main key in this database table is the customer ID number.
A chave principal nesta tabela de banco de dados é o número de identificação do cliente.
3. In music, the primary or tonal center key of a composition
The symphony is written in the main key of C major.
A sinfonia é escrita na chave principal de Dó maior.
4. The fundamental or most critical element that determines success or understanding
Communication is the main key to resolving conflicts.
A comunicação é a chave principal para resolver conflitos.
In Brazil, 'chave principal' is widely used in both technical contexts (IT/databases) and everyday language. In corporate and security settings, maintaining control of the 'chave principal' is a critical responsibility. The metaphorical use of 'main key' to mean 'fundamental element for success' is common in both American English and Brazilian Portuguese.
Synonyms / Sinônimos
primary keymaster keyfundamental keychief key
Antonyms / Antônimos
secondary keybackup key

Regional Variations

General Brazilian
chave principal
most common and standard term
Rio de Janeiro
chave principal
same as general Brazilian Portuguese
São Paulo
chave principal
same as general Brazilian Portuguese
Portugal
chave mestra
alternative term sometimes used in European Portuguese

Related Words

lockunlockpasswordaccesssecuritydatabase

Related Idioms & Phrases

the key to success
hold the key to
turn the key
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