Destiny is Bungie's lowest rated game since Oni, in 2001. In the social media age, the ability to control messages through expensive and highly controlled marketing is still highly prized by large companies, and they don't come much bigger than Microsoft.
Princeton's WordNet(2.00 / 1 vote)Rate this definition: key(noun) metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated. key(noun) something crucial for explaining. the key to development is economic integration. key(noun) pitch of the voice.
Foreign key. In the context of relational databases, a foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key or a unique key in the first table.