Update 100-orms.md (#1231)

* Update 100-orms.md

* Update content/roadmaps/101-backend/content/108-more-about-databases/100-orms.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/101-backend/content/108-more-about-databases/100-orms.md

@@ -1 +1,7 @@
-# Orms
+# ORMs
+
+Object-Relational Mapping (ORM) is a technique that lets you query and manipulate data from a database using an object-oriented paradigm. When talking about ORM, most people are referring to a library that implements the Object-Relational Mapping technique, hence the phrase "an ORM".
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://en.wikipedia.org/wiki/Object–relational_mapping'>Object Relational Mapping - Wikipedia</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://stackoverflow.com/questions/1279613/what-is-an-orm-how-does-it-work-and-how-should-i-use-one'>What is an ORM and how should I use it?</BadgeLink>