Unstructured, Semi-structured Data

What is meant by Structured Data; why is it called Structured Data.

What is meant by Semi-structured Data; why is it called Semi-structured Data.

Is there a benefit of XML over structured data; in detail describe. You may use the web to aid this.

On the PowerPoint presentation there is an example of a XML file containing books. Design and create a XML file to store the details of ten TV shows plus a graphical representation of the XML file.

What is meant by unstructured Data; why is it called unstructured Data. Give examples of unstructured data.

Another form of semi-structured data is the use of API's. What is an API? Please visit this API [URL provided in the image] all will be revealed – very cool!!