primary key
[ˈpraɪ.mer.i kiː]
nounpl: primary keys
chave primária
1. A database field or combination of fields that uniquely identifies each record in a table, ensuring no duplicate entries and serving as the main reference for relationships between tables.
The user ID serves as the primary key in the customers table.
O ID do usuário funciona como a chave primária na tabela de clientes.
2. The unique identifier attribute in a relational database that must contain unique values and cannot be null.
Every row in the database must have a primary key to maintain data integrity.
Cada linha no banco de dados deve ter uma chave primária para manter a integridade dos dados.
This is technical terminology primarily used in database design and software development. Both English and Portuguese versions are widely understood in Brazilian and Portuguese tech communities, though the English term 'primary key' is often retained in technical documentation and code comments even in Portuguese-speaking countries.
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