Thursday, 9 October 2014
Data hierarchy
Data hierarchy is the step by step representation of complex
data in different level starting from basic bits to highest level files.
We will discuss in this post how this hierarchy is formed.
Suppose we have a excel
file in which there are the names of some students and their marks in a subject.
The file is the highest level of data-hierarchy . Next to it
is the record a person name together with its marks is referred to as records.
Inside record the name of the student will be a field. A field is combination
of characters. An individual character will then be represented by a byte. That
byte will be combination of a bit. The picture below will make the idea clear
