An item of data that is identified by an arbitrary name. The key is the name, and the value is the content; for example, the key might be CITY, and the value might be CHICAGO. A key-value database is ...

If the data structure is more appropriately accessed through key-value pairs, then the best solution is likely a dedicated key-value pair database. If the objective is to quickly find connections ...

Most applications need some form of persistence—a way to store the data outside the application for safekeeping. The most basic way is to write data to the file system, but that can quickly become a ...