Databases

Database Relations: 1:1, 1:N, N:N

Entities in databases can have relationships with other entities. These relationships are called relations. In this article we will learn about the different…

What is an Entity-Relationship Model (ER Model)?

Entity-relationship models are a graphical abstraction of data models. They can be used to describe how different entities are related to each other. In other…

A practical example of normalization in relational databases

After learning about the concept of primary keys as well as foreign keys in relation databases and how to use them in theory, its time to take that onto a more…

Introduction into foreign keys in relational databases

Let’s take your journey on database development one step further and learn about another important type of key: foreign keys. To get the idea behind…

Introduction into primary keys in relational databases

You just learned about the core concept of relational databases and how they are built up in databases, tables, rows, and columns? And now you want to take it…

Introduction into relational databases

You probably already heard about databases at some point. You want to face it and learn a little more about what databases actually are, how they are built up,…