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An example table rendered in a web browser using HTML. A table is an arrangement of information or data, typically in rows and columns, or possibly in a more complex structure. Tables are widely used in communication, research, and data analysis. Tables appear in print media, handwritten notes, computer software, architectural ornamentation ...
Avoid relying solely on formatting (e.g., background color changes) to convey meaning. Additionally, do not refer to tables in body text as being positioned on the left or right side of a page. Content placement varies between mobile and desktop views, making such descriptions meaningless for users relying on assistive tools like screen readers.
{{Screen reader-only}}: for a table caption directly below a section heading, or table description. {{Aligned table}}: for specifying tables as a template, allowing inclusion in other templates and areas where table syntax is problematic. Examples: {{Chess diagram}}: chess board template. {}: Go board template.
All data tables need a table caption that succinctly describes what the table is about. [WCAG 2] It plays the role of a table heading, and is recommended as a best practice. [2] You would usually need some kind of heading or description introducing a new table anyway, and this is what the caption feature exists for. Table captions are made with |+.
For example, nested tables (tables inside tables) should be separated into distinct tables when possible. Here is a more advanced example, showing some more options available for making up tables. Users can play with these settings in their own table to see what effect they have.
In this example, the scope attribute defines what the headers describe, column or row, which screen readers use. You can add a table using HTML rather than wiki markup, as described at HTML element#Tables. However, HTML tables are discouraged because wikitables are easier to customize and maintain, as described at manual of style on tables.
A summary (which isn't displayed visually) provides a description of the table's purpose and structure for non-visual browsers, which read the page aloud. For example, a summary might say, "The table is organized with the oldest model of the automobile first, and the latest model last."
In a database, a table is a collection of related data organized in table format; consisting of 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. [1]