Question

Create an E-R Diagram for the following:An art museum owns a large volume of artworks. Each artwork is described by an item Id (identifier), title, type, and size; size is further composed of height, width, and weight. A work of art is developed by an artist, but the artist for some works is unknown. An artist is described by an artist ID (identifier), name, date of birth, and date of death (which is null for still living artists). Notice that the name of the artist is a composite attribute, composed of first, last and preferred names and it cannot be empty. The artist DOB is also required). Data about both artists of works currently owned by the museum and artists that have otherwise been featured in the museum are kept in the database. At any point in time, a work of art is either on display at the museum, held in storage, away from the museum as part of a traveling show, or on loan to another gallery. If on display at the museum, a work of art is also described by its location within the museum. A traveling show is described by a show ID (identifier), and the start and end dates of the show. Many of the museum works may be part of a given show, and only active shows with at least one museum work of art need be represented in the database. Every show may be visiting multiple cities and therefore has a schedule associated with it, listing the city visited, the start and end dates and the contact phone number. There may be more than 1 contact phone numbers and all the attributes are required. Notice that there is only one schedule associated with each show but the same schedule can be used more than once for shows that are travelling together. Only schedules that have been used for shows are stored in the database. Finally, another gallery is described by a gallery ID (identifier), name, and city. The museum wants to retain a complete history of loaning a work of art to other galleries, and each time a work is loaned, the museum wants to know the date the work was loaned and the date it was returned. As you develop the ERD for this problem, follow good data naming guidelines.

Answer 1

An entity–relationship model describes interrelated things of interest in a specific domain of knowledge.

Explanation:

An entity relationship model, also called an entity-relationship (ER) diagram, is a graphical representation of entities and their relationships to each other, typically used in computing in regard to the organization of data within databases or information systems.

ER Diagrams are most often used to design or debug relational databases in the fields of software engineering, business information systems, education and research. ER diagrams also are often used in conjunction with data flow diagrams (DFDs), which map out the flow of information for processes or systems.