A data table is a collection of related data held in a structured format within a database. It consists of fields (columns) and rows.

In relational databases and flat file databases a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows the cell being the unit where a row and column intersect. A table has a specified number of columns but can have any number of rows. Each row is identified by one or more values appearing in a particular column subset. The columns subset which uniquely identifies a row is called the primary key.