Difference between two terms

Question

What is difference between sql and nosql?
Why is nosql required?

Answer 1

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Answer 2

Thnx

Answer 3

sql =structured query language. it is a relational database which consists of tables, and their relationships i.e one to one, one to many, many to many. e.g. an author can write many books, and a book can be written by many authors. in this situation, authors would be in a separate table from the books but they will have a relationship.

nosql on the otherhand is the more recent of the two. information isnt stored in tables, but are rather stored as objects/json. nosql is a lot more flexible and leas redundant than sql, however sql is well eatablished and hence more secure. youll never catch a bank using nosql.