1. An organized grouping of columns (i.e. fields). 2. In a relational database, a table (sometimes called a file) organizes the information about a single topic into rows and columns. The process of normalization determines how data will be most effectively organized into tables. 3. A decision table (often called a truth table) contains a list of decisions and the criteria on which they are based. All possible situations for decisions should be listed, and the action to take in each situation should be specified. A decision table can be inserted into a computer program to direct its processing according to decisions made in different situations. Changes to the decision table are reflected in the program. 4. An HTML table is used to organize Web page elements spatially or to create a structure for data that is best displayed in tabular form, such as lists or specifications.