Consider the relational schema R(A, B,C, D, E,G, H, I) and a set of functional dependencies F = H → D, B → AI, I → BC, DH →I, ABG → HI. Note that A, B, C, D, E, G, H, and I are attributes. ii. Regarding F, is the decomposition R1 R4 = AC of R lossless join? Please justify your answer. ADEG, R2 = BC'E, R3 = EH and

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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4b2

Consider the relational schema R(A, B,C, D, E,G, H, I) and a set of
(b)
functional dependencies F = H → D, B → AI, I → BC, DH → I, ABG –→ HI. Note
that A, B, C, D, E, G, H, and I are attributes.
ii. Regarding F, is the decomposition R1 = ADEG, R2 = BCE, R3 = EH and
RA = AC of R lossless join? Please justify your answer.
Transcribed Image Text:Consider the relational schema R(A, B,C, D, E,G, H, I) and a set of (b) functional dependencies F = H → D, B → AI, I → BC, DH → I, ABG –→ HI. Note that A, B, C, D, E, G, H, and I are attributes. ii. Regarding F, is the decomposition R1 = ADEG, R2 = BCE, R3 = EH and RA = AC of R lossless join? Please justify your answer.
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