What kind of database is most commonly used for this purpose: Data objects of various data types are sent quickly and directly to applications or end users. Choose one: Key-Value database b....

What kind of database is most commonly used for this purpose: Data objects of various data types are sent quickly and directly to applications or end users.

Choose one:

1. Key-Value database b. Column-oriented database c. Document-oriented database d. Graph database e. Relational database a.