Which steps are included in recombinant $DNA$ technology mechanism?

(N/A) Recombinant $DNA$ technology involves several steps in a specific sequence:
$1$. Isolation of the genetic material $(DNA)$.
$2$. Fragmentation of $DNA$ by restriction endonucleases.
$3$. Isolation of a desired $DNA$ fragment.
$4$. Ligation of the $DNA$ fragment into a vector.
$5$. Transferring the recombinant $DNA$ into the host.
$6$. Culturing the host cells in a medium at a large scale.
$7$. Extraction of the desired product.