create table ToolCapabilities ( ToolNumber integer not null, Use integer not null, primary key (ToolNumber, Use), foreign key (ToolNumber) references tools (ToolNumber)); create table ...

MySQL will soon store FOREIGN KEY definitions so that a client can ask for and receive an answer about how the original connection was made. The current `.frm' file format does not have any place for ...

Creating and using an SQLite database for data persistence in Android apps. Covers the basics, as well as using foreign keys. Full source included.

This can be compared to a foreign key in SQL, where a column in one table refers to the primary key in another table. For example, a “player” table may have a foreign key column called “role_id,” ...

What does foreign key actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.