Databases have evolved to include various new storage techniques to hold structured and unstructured data. NoSQL databases are often used to query Big Data. NoSQL typically means using horizontal scaling and other methods to retrieve data. It does not intend to mean that SQL is not used as part of NoSQL, you will find the term to mean "not only" SQL. Relational databases use SQL to find data results.

For this discussion, do the following:

• Why do we have many different NoSQL database types?
• Can you provide a real-world example of where a NoSQL database is more suitable than a SQL database and why?
• Can you provide a real-world example of where a relational database is more suitable than a non-relational database and why?