Elizabeth the 1st was the last and longest monarch to reign out of the tudor royal family, ruling for 45 years.
A thread is code that is to be serially executed within a process. A processor executes threads, not processes, so each application has at least one process, and a process always has at least one thread of execution, known as the primary thread. A process can have multiple threads in addition to the primary thread. processor executes threads, not processes, so each application has at least one process, and a process always has at least one thread of execution, known as the primary thread. A process can have multiple threads in addition to the primary thread.
An instance is simply a set of operating system processes, or a single process with many threads, and some memory. These processes can operate on a database; a database is just a collection of files. (data files, temporary files, redo log files, and control files).