database system

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
Section: Chapter Questions
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In database terminology, what does the separation of higher level semantics of a database system from the lower
level implementation issues refer to?
O Tagging
Reliability
Availability
Transparency
Consider the following potential fragmentation. Does it provide a good fragmentation?
F={F1, F2, F3}
F₁ = Oi<10{E}
F₂ = 10sis20 {E}
No, there are duplicate rows.
No, there are missing rows.
No, there are rows that cannot be reconstructed.
Yes, all rows appear at least once.
F3 = Oiz20{E}
Transcribed Image Text:In database terminology, what does the separation of higher level semantics of a database system from the lower level implementation issues refer to? O Tagging Reliability Availability Transparency Consider the following potential fragmentation. Does it provide a good fragmentation? F={F1, F2, F3} F₁ = Oi<10{E} F₂ = 10sis20 {E} No, there are duplicate rows. No, there are missing rows. No, there are rows that cannot be reconstructed. Yes, all rows appear at least once. F3 = Oiz20{E}
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