Relational algebra in Database(Simple)

based on the database schema:    Movies(, year, length, genre, studioName, producerCertificateNum)    StarsIn,)    MovieStar(, address, gender, birthdate)    MovieExecutive(, address, certificateNum, netWorth)    Studio(, address, presidentCertificateNum)1 –  Use relational algebra to find the name of the producer of Star Wars. (Hint: a producer is a movie executive).2 –  Use relational algebra to list the names of stars who share an address, each pair of star names should be listed once.3 –  Use relational algebra to list the names and addresses of all female movie stars who are also movie executives with a net worth over $10,000,000.4 –  Use relational algebra to find the stars who played in every movies produced by Gary Kurtz.

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