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Considere o modelo ER abaixo e indique o esquema das relações que o representam
e1(a0,a1,a2)
e2(a0,a1,a2,a3)
e3(a0,a1,a2,a4)
e2(a0,a1,a3)
e3(a0,a1,a4)
e2(a3)
e3(a4)
e1(a0,a1,a2,a3,a4)
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