Logical data model

A logical data model is like a map that shows how different pieces of information are related to each other. Imagine you have a big toy box with lots of toys inside. You want to keep them organized, so you decide to group them together by type - dolls in one group, cars in another, blocks in another, and so on.

A logical data model does the same thing, but instead of toys, it groups different types of information together. For example, in a database for a school, you might group information about students together - their name, age, and grade level. You might also group information about classes together - the name of the class, the teacher's name, and the schedule.

A logical data model also shows how different pieces of information are related to each other. For example, in the school database, students are related to the classes they are enrolled in. This is shown on the map with a line connecting the two groups of information.

By using a logical data model, it is easier to understand how different pieces of information are related to each other and to keep everything organized.