The relation schemas R1 and R2 form a Lossless join decomposition of R – McqOptions

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1.	The relation schemas R1 and R2 form a Lossless join decomposition of R if and only if :(a) R1⌒ R2 ⇒ (R1- R2)(b) R1→ R2(c) R1⌒ R2 ⇒ (R1- R2)(d) R2→ R1⌒R2
A.	(a) and (b) happens
B.	(a) and (d) happens
C.	(a) and (c) happens
D.	(b) and (c) happens
Answer» D. (b) and (c) happens

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