An access point allows wireless devices to communicate with a wired network. It acts as a bridge between wireless devices and the wired network, providing connectivity and enabling the exchange of data.

A server is a computing device used to provide a centralized means to distribute services to a group of clients. It usually possesses a role on a local area network (LAN), handling requests and managing resources for the network's users.

In database terminology, a 'foreign key' refers to a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table. The foreign key is defined in the child table, and it refers to the primary key in the parent table. This ensures referential integrity between the two tables. Hence, the correct answer is 'foreign key'.

A relational database management system (RDBMS) is most commonly used for storing information. It organizes data into tables which can be easily accessed, managed, and updated. While it can also generate reports based on stored data, its primary purpose is to store and retrieve information efficiently.

An application running on a typical operating system is best described as a 'Process.' A process is an instance of a program that is being executed, which includes the program code and its current activity. Threads and tasks are parts of processes, and functions are blocks of code that carry out specific instructions within a process.