 Welcome back MechanicalEI. Did you know that the relational database model is the most important data model for commercial data processing applications and has become the leading data processing software due to its simple advantages? This makes us wonder, what are the advantages of a relational model? Before we jump in, check out the previous part of the series to learn about what a relational model is. Now, a relational model has the following advantages. First, it offers structural independence. That is, in a relational model, changes in the database structure do not affect the data axis. Second, is conceptual simplicity. Since the relational data model frees the designer from the physical data storage details, the designers can concentrate on logical view of the database. Third, it is easy to design, implement and maintain a relational database model as it achieves both data and structure independence. Fourth and last, relational databases have ad hoc query capability, which means it has the presence of a very powerful, flexible and easy to use query capabilities. Data manipulation is the process of changing data to make it easier to read or be more organized. Data manipulation commands are used to manipulate data in the database. Data integrity, on the other hand, is enforced in both hierarchical and relational database models. The concept of data integrity ensures that all data in a database can be traced and connected to other data. This ensures that everything is recoverable and searchable. Having a single, well-defined and well-controlled data integrity system increases stability, performance, reusability and maintainability. Hence, we first saw what the advantages of a relational model are and then went on to see what data manipulation and data integrity are. So, like, subscribe and comment with your feedback to help us make better videos. Thanks for watching. Also, thanks a lot for those constructive comments. You helped the channel grow. So, here are the top mechanical EIs of our last videos. In the next episode of Mechanical EI, find out what relational algebra is.