Join Tables and the "many-to-many" Relationship A join table contains common fields from two or more other tables. In this way, it creates a many-to-many relationship between data. Let's take a closer ...

In data analysis applications, multi-table JOIN operations within a database often involve complex SQL and exhibit suboptimal JOIN performance. As a result, multiple tables are often joined to a wide ...

You often need data that are stored in separate tables. For example, you may want to produce a report that gets information about flight delays from one table and boarding capacity from another.