Data Models and Structured Data
When you build an analytical solution, the first thing that you need to do is to build a data model. A data model is an overview of the data sources that you will be using, their relationships with other data sources, where exactly the data from a specific source is going to be fetched, and in what form (such as an Excel file, a database, or a JSON from an internet source).
Note
Keep in mind that the data model evolves as data sources and processes change.
A data model can contain data of the following three types:
- Structured Data: Also known as completely structured or well-structured data, this is the simplest way to manage information. The data is arranged in a flat tabular form with the correct value corresponding to the correct attribute. There is a unique column, known as an index, for easy and quick access to the data, and there are no duplicate columns. For example, in Figure 1.1, employee_id is the unique column. Using the data...