The movie production entity-relationship (ER) diagram shows entities like movies2actors, actors, movies, users, movie2directors, directors, u2base, and users. These entities of the movie production have attributes like movie_id, year, is_English, country, running_time, user_id, U_gender, occupation, rating, and others. It should be noted here that in entity-relationship diagrams, relationship type is represented by a diamond and connecting the entities with lines. As the movie production illustrates, the ERD is a graphical representation of an ER model and is currently one of the most popular and widely used database design tools. As graphically represented below, the three main components of the ER model are entities, attributes, and relationships.
