Imagine you have a toy box with all of your favorite toys in it. You have a ball, a car, a teddy bear, and a puzzle. These toys are different from each other, but they all belong to you.
Similarly, in computer science, data can be organized in a structured entity relationship model. This means that different types of data are stored and connected to each other based on their relationships.
For example, let's say you own a pet store. You have three types of entities: customers, pets, and purchases. In this scenario, the customers and pets entities are related by a "has" relationship (a customer "has" a pet), and purchases are related to both customers and pets entities.
The structured entity relationship model helps you keep track of all of the information about the pets, the customers, and their purchases by organizing them in a clear and structured way, just like your toy box.
Overall, structured entity relationship models are a way to organize data so that it can be easily stored, accessed, and analyzed in a way that makes sense to us humans.