What is semistructured data? Discuss the difference between structured, semistructured, and structured data. Give examples to illustrate your answer.

What will be an ideal response?

Semistructured data is data that has some structure, but the structure may not be rigid, regular,
or complete and generally the data does not conform to a fixed schema (sometimes the terms
schema-less or self-describing is used to describe such data). In semistructured data, the
information that is normally associated with a schema is contained within the data itself. In
some forms of semistructured data there is no separate schema, in others it exists but only
places loose constraints on the data.