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Given the following schema AB ⟶ CD
A ⟶ B
B ⟶ E
E ⟶ F
A ⟶ F
G ⟶ H
H ⟶ E
GC ⟶ H
G⟶E

Required:
a. Find a minimal cover of this schema.
b. Find a key of this schema.
c. Find a 3rd normal form decomposition of this schema.
d. Find a BCNF decomposition of this schema.

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Given the following schema AB ⟶ CD
A ⟶ B
B ⟶ E
E ⟶ F
A ⟶ F
G ⟶ H
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