Database

The concept of database is facilitating to a search mission. In the beginning, the most difficulties were to create the tables or entities and their attributes. No repeating elements or groups of elements, no partial dependencies on a concatenated key, and no dependencies on non-key attributes were the most important keys to create the tables or entities and their relationships. After reading the articles such as “The 3 Normal Forms: A Tutorial” by Fred Coulson and watching some tutorials such as "Data Modeling" by Joshus Mostafa are the best way to get everything clear.