Question

• Describe structured, semi-structured, and unstructured data, in a Big Data context.
• Research one challenge to capturing and storing each type of data, as well as strategies available to manage the challenge.
• Explain how query optimization supports data structures.

Answer 1

Challenge with structured data:
Storing data in structured format forces certain constraint such as formatting, following DB constraints, data cleansing etc.

Challenge with unstructured data:

Unstructured data doesn’t fit neatly into databases organized by fixed categories like name, address, social security number, etc. Unstructured data is the freeform information that is mined from things like social media posts, notes made by a call center agent, email, or Twitter conversations with customers.

Challenge with unstructured data:
The XML challeneg. XML falls in the category of semi structured data and the challenge faced are mostly the xml parsing and storing.