Question: Design Of Database System True or False 1. R(A,B,C,D) has AB as its only candidate key. The decomposition of R into R1(A,B,C) and R2(A,B,D) is

Design Of Database System

True or False

1. R(A,B,C,D) has AB as its only candidate key. The decomposition of R into R1(A,B,C) and R2(A,B,D) is lossless.

2. In Relational DB, the effect of a transaction needs not be isolated before its completion.

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