This system was developed again in IBM in the early 80s and is considered one of the most reputed database systems to date. A few notable examples of the software that adopted this style are Oracle and MySQL.
In this model, data is stored in the form of records where each record in turn has several attributes. All the record collections are stored in a table. Relationships exist between the data attributes across tables. Sets of related tables are stored in a database.
Let's see a typical example of how this RDBMS table looks:
We are defining the following types of tables and relationships
