You are writing a query to find all valid charge amounts. A charge amount is considered valid only for the days between two columns. SNAP_START DATE and SNAP_END_DATE. The charges is also considered valid on the SNAP_START_DATE and the SNAP_END_DATE. Assume that these two columns will always store a time of midnight and the SNAP_END_DATE will always come later than SNAP_START_DATE. Which of these expressions would return TRUE only for charge amounts valid on February 14, 2018, and FALSE for all other charge amounts? A. SNAP_START_DATE < '14 FEB 2018' AND '14 FEB 2018' < SNAP_END_DATE B. SNAP_START_DATE <= '14 FEB 2018' AND '14 FEB 2018' <= SNAP_END_DATE C. SNAP_START_DATE > '14 FEB 2018' AND '14 FEB 2018' > SNAP_END_DATE D. SNAP_START_DATE >= '14 FEB 2018' AND '14 FEB 2018' >= SNAP_END_DATE

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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You are writing a query to find all valid charge amounts. A charge amount is considered valid only for the days between two columns. SNAP_START DATE and SNAP_END_DATE. The charges is also considered valid on the SNAP_START_DATE and the SNAP_END_DATE. Assume that these two columns will always store a time of midnight and the SNAP_END_DATE will always come later than SNAP_START_DATE. Which of these expressions would return TRUE only for charge amounts valid on February 14, 2018, and FALSE for all other charge amounts?

A. SNAP_START_DATE < '14 FEB 2018' AND '14 FEB 2018' < SNAP_END_DATE

B. SNAP_START_DATE <= '14 FEB 2018' AND '14 FEB 2018' <= SNAP_END_DATE

C. SNAP_START_DATE > '14 FEB 2018' AND '14 FEB 2018' > SNAP_END_DATE

D. SNAP_START_DATE >= '14 FEB 2018' AND '14 FEB 2018' >= SNAP_END_DATE

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