A linear data structure is a type of data structure where data elements are arranged sequentially or linearly, with each element having a unique predecessor (except for the first element) and a unique successor (except for the last element) . The order in which elements are added to the data structure is preserved, and accessing elements within a linear data structure is typically efficient. Linear data structures can have either fixed or dynamic sizes, and they are commonly used for organizing and manipulating data in a sequential fashion. Some of the most common linear data structures include arrays, stacks, queues, and linked lists.