MLchartDataset catalogue

Primary key

Term · Computing and IT · MLC-T-CMP-000954

A column or set of columns in a relational database table that provides a unique identifier for each row. The primary key's value must be unique for every record and cannot contain null values. This constraint enforces entity integrity and is used to create relationships with other tables via foreign keys.

Table 1. Record
IdentifierMLC-T-CMP-000954
FieldComputing and IT
SubjectTechnical
Record as JSON 
{
  "id": "MLC-T-CMP-000954",
  "term": "Primary key",
  "field": "Computing and IT",
  "definition": "A column or set of columns in a relational database table that provides a unique identifier for each row. The primary key's value must be unique for every record and cannot contain null values. This constraint enforces entity integrity and is used to create relationships with other tables via foreign keys.",
  "subject": "Technical",
  "url": "https://mlchart.com/terminology/computing/primary-key/"
}

Record 1,050 of 1,553 in Computing and IT terminology (MLC-0101). Request the full dataset.