ER Diagram for the Film Industry Domain

Entities and Their Descriptions:

Movie
Movie_ID (Primary Key)
Title
Release_Date
Budget
Box_Office
Director_ID (Foreign Key)
Studio_ID (Foreign Key)
Franchise_ID (Foreign Key, Optional)
Writer_ID (Foreign Key, Optional)
Description: Represents a film that has been produced, including details like title, release date, budget, box office earnings, and foreign keys linking to its Director, Studio, Franchise, and Writer.
Director
Director_ID (Primary Key)
Name
Date_of_Birth
Nationality
Description: Represents a film director with personal details.
Studio
Studio_ID (Primary Key)
Name
Founded_Date
Headquarters_Location
Description: Represents a film production studio responsible for producing movies.
Franchise
Franchise_ID (Primary Key)
Name
Main_Director_ID (Foreign Key)
Description: Represents a film franchise or cinematic universe, including its name and main director.
Genre
Genre_ID (Primary Key)
Genre_Name
Description: Represents a genre category in the film industry, such as Action, Comedy, or Drama.
Actor
Actor_ID (Primary Key)
Name
Date_of_Birth
Nationality
Description: Represents an actor or actress in the film industry.
Writer
Writer_ID (Primary Key)
Name
Date_of_Birth
Nationality
Description: Represents a writer who writes screenplays for movies.
Award
Award_ID (Primary Key)
Name
Category
Year
Description: Represents an award that can be received by a movie or other entities, including details like the award name, category, and year.
Book
Book_ID (Primary Key)
Title
Author
Publication_Year
Description: Represents a book that may be adapted into a movie.
Relationships and Their Descriptions:

1:1 Relationships

Relationship: Franchise - Main_Director
Degree of Relationship: 1:1
Participation Constraints: Mandatory participation for both Franchise and Director
Interpretation: Each Franchise must have one Main Director, and each Director directs exactly one Franchise.
Relationship: Movie - Sequel_Movie
Degree of Relationship: 1:1
Participation Constraints: Optional participation for Movie (Original), Mandatory participation for Sequel_Movie
Interpretation: A Movie may have a Sequel; each Sequel Movie must be a sequel to exactly one original Movie.
Relationship: Movie - Book
Degree of Relationship: 1:1
Participation Constraints: Optional participation for both Movie and Book
Interpretation: A Movie may or may not be adapted from a Book; a Book may or may not have been adapted into a Movie. Each Movie is adapted from at most one Book, and each Book is adapted into at most one Movie.
1:n Relationships

Relationship: Studio - Movie
Degree of Relationship: 1:n
Participation Constraints: Mandatory participation for both Studio and Movie
Interpretation: Each Studio must produce at least one Movie; each Movie must be produced by exactly one Studio.
Relationship: Franchise - Movie
Degree of Relationship: 1:n
Participation Constraints: Mandatory participation for Franchise, Optional participation for Movie
Interpretation: Each Franchise must have at least one Movie; a Movie may or may not be part of a Franchise.
Relationship: Director - Movie
Degree of Relationship: 1:n
Participation Constraints: Optional participation for Director, Mandatory participation for Movie
Interpretation: A Director may or may not direct any Movies; each Movie must be directed by exactly one Director.
Relationship: Writer - Movie
Degree of Relationship: 1:n
Participation Constraints: Optional participation for both Writer and Movie
Interpretation: A Writer may or may not have written any Movies; a Movie may or may not have a credited Writer.
m:n Relationships

Relationship: Actor - Movie
Degree of Relationship: m:n
Participation Constraints: Mandatory participation for both Actor and Movie
Interpretation: Each Actor must act in at least one Movie; each Movie must have at least one Actor.
Relationship: Movie - Genre
Degree of Relationship: m:n
Participation Constraints: Mandatory participation for Movie, Optional participation for Genre
Interpretation: Each Movie must be assigned at least one Genre; a Genre may or may not have any Movies associated with it.
Relationship: Movie - Award
Degree of Relationship: m:n
Participation Constraints: Optional participation for both Movie and Award
Interpretation: A Movie may or may not win any Awards; an Award may or may not be given to any Movie.
Summary:

Entities Included: 9 entities related to the film industry, each with identifying properties and descriptions.
Relationships Covered:
1:1 Relationships: 3 examples with different combinations of participation constraints.
1:n Relationships: 4 examples covering all four possible combinations of participation constraints.
m:n Relationships: 3 examples with different combinations of participation constraints.
Descriptions Provided: Detailed descriptions for all entities, including their attributes and identifying properties, as well as all relationships, following the specified format.
Participation Constraints Considered: Both mandatory and optional participation for entities in relationships, covering all required combinations.
This ER diagram model reflects the film industry domain, capturing essential entities such as Movies, Directors, Studios, Actors, Writers, Genres, Franchises, Awards, and Books. It illustrates the complex relationships between these entities, ensuring that all specified criteria and combinations of relationship degrees and participation constraints are met.
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