Dracaena is the name of the genus in which your plant is classified. Marginata is the species name. Every living thing has both a genus name and a species name. Modern humans, for instance, are in the genus 'Homo' and the species 'sapiens'... Homo sapiens.
Your plant is more than likely
Dracaena marginata, but there are other members of the genus
Dracaena. If you use Google Images to search for
dracaena, you will see pics of several. Here are just a couple of them:
[img]https://i252.photobucket.com/albums/hh27/Kisal_photos/dracaena1.jpg[/img]
Dracaena deremensis 'Lemon Lime'
[img]https://www.houseofplants.co.uk/Resources/Pic_dracaena_massanaegea100_close.jpg[/img]
Dracaena fragratissima 'Massangeana'
(The name inside the quote marks is the
variety name.

)
Dracaena marginata likes bright, indirect light, but it will tolerate low light. Allow the soil to dry down to about 1/2 inch before watering, but then water very thoroughly. Dig into the soil with your fingertip to see how dry it is. Don't allow water to collect in the plant's drainage tray/saucer. If the humidity in your house is below 40%, use a spray bottle to lightly mist the plant with water.
HTH!

"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams