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ARTIST (arid, fname, Iname, dateofbirth) ALBUM (alid, name, year, gid) GENRE (gid, name) ALBUM_ARTIST (alid, arid) SONG (sid, name, time, alid) Find the names of

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ARTIST (arid, fname, Iname, dateofbirth) ALBUM (alid, name, year, gid) GENRE (gid, name) ALBUM_ARTIST (alid, arid) SONG (sid, name, time, alid) Find the names of the songs shorter than 180 seconds. Solve using Tuple Relational Calculus. {t|3s e Song (t[name] = s[name] s[time]

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