Movie Database ERD Design For Regal Theaters: Tracks Movies
Movie Database ERD Design for Regal Theaters: Tracks Movies, Directors, and Stars
Design and implement an Entity Relationship Diagram (ERD) for Regal Theaters' movie database, capturing essential data about movies, directors, stars, and their relationships, including one-to-many and many-to-many relationships, suitable for Oracle Express Edition (XE).
Paper For Above instruction
The development of a comprehensive movie database for Regal Theaters necessitates a detailed and precise Entity Relationship Diagram (ERD) that effectively captures the core entities, their attributes, and the relationships among them. Based on the provided requirements, the ERD will include the primary entities: Movie, Director, Star, and a join table Movie_Star to facilitate the many-to-many relationship between Movies and Stars.
Entities and Attributes:
- Movie: This entity will include the following attributes:
- Movie_ID: a unique identifier for each movie; this will be the primary key.
- Title: the name of the movie.
- Genre: the category or genre, such as Comedy, Action, etc.
- MPAA_Rating: the movie's rating, e.g., PG, R.
- Release_Date: the date when the movie was released.
- Length_in_Minutes: duration of the movie in minutes.
- Director: This entity will include:
- Director_ID: a unique identifier; primary key.
- First_Name: director's first name.
- Last_Name: director's last name.
- Star: This entity encompasses:
- Star_ID: a unique identifier; primary key.
- First_Name: star's first name.
- Last_Name: star's last name.
Relationships:
- One-to-many between Director and Movie: A single director can direct many movies, but each movie has one director. This is represented with a foreign key Director_ID in the Movie table referencing Director.
- Many-to-many between Movie and Star: A movie can feature multiple stars, and a star can appear in multiple movies. This relationship is modeled via a join table Movie_Star, which contains foreign keys Movie_ID and Star_ID.
The ERD diagram will visualize these entities with their attributes, and draw arrows indicating the relationships: one-to-many from Director to Movie (directed by), and many-to-many between Movie and Star via Movie_Star join table.
For implementing the ERD in Oracle XE, the primary keys, foreign keys, and relationship cardinalities are explicitly defined. The ERD will serve as the foundational schema upon which subsequent queries and reports can be built, enabling Regal Theaters to efficiently manage its movie catalog, staff credits, and star appearances, supporting operational and analytical needs now and in the future.
References
- Elmasri, R., & Navathe, S. B. (2016). Fundamentals of Database Systems (7th ed.). Pearson.
- An Introduction to Database Systems. Boston: Pearson.
- Database System Concepts. McGraw-Hill Education.