A table is a data structure that organizes information into rows and columns. It can be used to both store and display data in a structured format.For example, databases store data in tables so that information can be quickly accessed from specific rows.ebsites often use tables to display data in a structured format. In fact, HTML has a tag, as well as (table row) and (table data) tags for specifying rows and columns. Since many tables use the top row for header information, HTML also supports a tag used to define the cells in the header row.