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Question

What does the SQL query "SELECT ID, Value, Start, End FROM Sensor WHERE Start <= 23 and End >= 27" retrieve?

a.

The IDs and values of sensors that have a start time less than or equal to 23 and an end time greater than or equal to 27.

b.

The IDs and values of sensors that have a start time greater than or equal to 23 and an end time less than or equal to 27.

c.

The IDs and values of sensors that have a start time less than or equal to 23 or an end time greater than or equal to 27.

d.

The IDs and values of sensors that have a start time greater than or equal to 23 or an end time less than or equal to 27.

Posted under Big Data Computing

Answer: (a).The IDs and values of sensors that have a start time less than or equal to 23 and an end time greater than or equal to 27. Explanation:The SQL query "SELECT ID, Value, Start, End FROM Sensor WHERE Start <= 23 and End >= 27" retrieves the IDs and values of sensors that have a start time less than or equal to 23 and an end time greater than or equal to 27.

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Q. What does the SQL query "SELECT ID, Value, Start, End FROM Sensor WHERE Start <= 23 and End >= 27" retrieve?

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