EXERCISE #1 Define an ER schema to describe movies and showing schedules. Movies have a director, actors and shown in theaters Information of interest For movies: title, genre, director, length, and release date For theaters: name, city, address, and number of seats etc.) For actors: name, age, telephone, and acting style (e.g. comedy, drama, For directors: name, age, telephone, and direction style (e.g. comedy, Moreover A movie has only one director - A movie may have zero or more actors A movie is in showing at one or more theaters Note: specify identifiers, attributes, and relationship cardinalities