AI engineering glossary · SQL databases
What is column?
Column (also called Attribute, Field): A named field in a table that stores one kind of value for every row, such as a price or a date. Each column has a data type and may carry rules like NOT NULL. In relational theory it is called an attribute.
Column: an example
The signup_date column in a users table stores a DATE value for each user.
Related terms
More SQL databases terms
- COMMIT and ROLLBACK
- Common table expression
- Composite index
- Connection pool
- Correlated subquery
- Covering index
- CROSS JOIN
- Database
Where you learn it
Column is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.