Category: Databases

The “country_data.xlsx” Excel file (posted in the Data module) contains various statistics for the countries of the world. (Some small countries are not included.) The file “country_variables.txt” contains short descriptions of what each of the statistics measures. 1a. Make a histogram of the infant mortality rate variable (Column AE). Discuss this graph. What kind of…

I am currently using a time card on google sheets I have the clock in and outs, although the formula i have only generates 24 hour period. I need the formula adjusted to generate the hours worked if they worked past 12am. See the top formula and help me plus in tn what ever is…

Choose 4 out of 6 the query to create 4 different data visualisations. (the query will be given in the file below) Step 1: Run the query and Export data as the CSV file. Step 2: Use that CSV file to create graphs in Tableau – These visualizations should aim to uncover valuable business insights…

1. Consider a relation R(A,B,C,D,E,F,G,H) with the following functional dependencies: A -> BCD AD -> E EFG -> H F -> GH (a) Based on these functional dependencies, there is one minimal key for R. What is it? (b) One of the four functional dependencies can be removed without altering the key. Which one? 2.…

1. Consider a relation R(A,B,C,D,E,F,G,H) with the following functional dependencies: A -> BCD AD -> E EFG -> H F -> GH (a) Based on these functional dependencies, there is one minimal key for R. What is it? (b) One of the four functional dependencies can be removed without altering the key. Which one? 2.…