A Doubly Linked List (DLL) is a type of linked data structure that consists of nodes. Each node contains three fields: data, a pointer to the next node, and a pointer to the previous node. This structure allows traversal in both directions—forward and backward.
A doubly linked list is a dynamic data structure where each node contains two pointers, one pointing to the previous node and another pointing to the next node, and one is data field. This enables efficient traversal in both directions, making it a versatile structure for scenarios where bi-directional data manipulation is needed.