3. Data is the new oil. Today data is everywhere in every field. Whether you are a data scientist, marketer, businessman, data analyst, researcher, or you are in any other profession, you need to play or experiment with raw or structured data. Explain with example what the main difference between structured and unstructured (10 Marks) 4. In the concept of a relational database management system, data is organized into tables. Tables are similar to folders in a file system, where each table stores a collection of information. What database relation mean, illustrate the types of database (10 Marks)