When is it necessary to qualify column names with their table names in a query?

The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming constant temperature and amount of gas?  Boyle’s law P1V1 = P2V2 Charle’s law V1T1 = V2T2 Gay-Lussac’s law P1T1 = P2T2 Combined gas law P1V1T1 = P2V2T2 T(K) = T(0C) + 273

In a JOIN using ON table1_key = table2_key, what is the typical relationship between these keys in a well-designed schema?

Why is it essential for a primary key to be assigned to a relational table?

What does the INNER JOIN clause do when used in a SELECT statement?

How many grams of Fe2O3  are there in 0.500 moles of Fe2O3? (molar mass of Fe2O3 = 159.69 g)

Calculate the molar mass of potassium chloride, KCl. ( K = 39.10 g/mol, Cl = 35.45 g/mol)

What are CTEs or common table expressions in SQL?

Given table SHIP, write an SQL query to calculate the length of the longest ship of each type.

Why is data typically stored across multiple tables in a relational database?