DP900 basic questions 1. In structured data, what are data entity, instances of the entity and attributes of the entity ? 2. Is structured data must be stored in relational databases ? 3. Are JSON and XML just for semi-structured data ? 4. Which date format stores data in binary ? 5. In Relational database, what is primary key and foreign key? 6. What is ACID ? 7. What is a transaction ? 8. Is NoSQL doesn't use SQL ? 9. What is Horizontal scaling and Vertical scaling ? 10. Can we say for the OLAP system the data will be from OLTP ? 11. Can a NoSQL database be used for relational data ? 12. Non-relational data refers to NoSQL databases that can store structured, semi-structured, and unstructured data ? 13. IaaS, PaaS, SaaS 14. Can batch processing output data to a relational databse and to an non relational database ?