What is Data Structure?
Data may be organized in many different ways. A data structure is a particular way of organizing and storing data in a computer so that it can be used efficiently.
In computer science, a data structure means there is a relationship of some kind between the data items.
Consider a list of individuals with their name and father’s name who were born from the same lineage.
We can represent these data either by tabular or tree structure:
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There are some other types of data structure. Most of the peaople like data should be in a struction. But most of the time it's not the realility. Data may be full structured, or semi-structured, or data has no common structure i.e. unstructured.

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