A database that maintains a set of separate, related files (tables), but ... Routine queries to a relational database often require data from more than one file. For example, to obtain the names ...

A question asked about data contained in two or more tables in a relational database. The relational query must specify the tables required and what the condition is that links them; for example ...

Rather than storing information in one table, relational databases store data across several tables. In a relational database ... In these examples the words 'is used on' appear on the line ...