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What must be true of a column or column combination before i…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
What must be true of a column or column combination before it can serve as a primary key in SQL?
Continue reading “What must be true of a column or column combination before i…”…

What does the asterisk (*) symbolize when it is used right a…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
What does the asterisk (*) symbolize when it is used right after SELECT?
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You want to create a list of ship names and their destinatio…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
You want to create a list of ship names and their destination ports for voyages that went to ‘Singapore’. You use a CTE to define the voyages first. Which query gives the correct result?
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Given table SHIP, write an SQL query to find the ship types…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
Given table SHIP, write an SQL query to find the ship types that have an minimum length less than 200, along with the count of ships for those types.
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In relational database terminology, what is the term ‘column…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
In relational database terminology, what is the term ‘column’ most commonly used to describe?
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In SQL, what does the SELECT statement do?

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
In SQL, what does the SELECT statement do?
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A mixture is prepared by dissolving 2 g of KCl in 100 g of H…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
A mixture is prepared by dissolving 2 g of KCl in 100 g of H2O. In this mixture, H2O is the 
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What is the [H3O+] in a solution with [ OH-] = 1 × 10-12 M?…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
What is the in a solution with = 1 × 10-12 M? (Kw = 1.0 x 10-14)
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 A potato contains 20 g of carbohydrate. If carbohydrate has…

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
 A potato contains 20 g of carbohydrate. If carbohydrate has a caloric value of 4 kcal/g, how many kcal are obtained from the carbohydrate in the potato?
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How many significant figures are in the number 1.00208? 

Posted on: June 2, 2025 Last updated on: November 13, 2025 Written by: Anonymous
How many significant figures are in the number 1.00208? 
Continue reading “How many significant figures are in the number 1.00208? ”…
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