Blog

Identify the chemical hazards in the PBES scenario.

Select all the correct statements about star schema.   

Consider left-joining R1 and R2 using column “A”. Tables R1 and R2 shown here: That is: select R1.A, R1.B, R2.A, R2.C from R1 left join R2 on R1.A=R2.A; How many rows will the query return?  

Choose all the MySQL reserved words that can start a “clause” that we have used this course. 

What is the function of a WHERE clause? 

ETL (extract, transform, load) is only required when we are combining several sources of data into data warehouse. In other words, when the only source of data for a company’s data warehouse is its operational database, then ETL is not necessary.    

What is the function of a GROUP BY clause? 

  Which query will produce a list of user_name that are repeated, and the number of times they occur?   

Consider the following ER diagram. How many tables do you need to create in the database schema to store all the data and relationships in the diagram? 

A 3-year-old intubated patient has an arterial blood gas showing pH=7.52, PaCO2=28 mm Hg, PaO2=88 mm Hg  on FIO2=0.30. Chest radiograph is unchanged from baseline, and the child is agitated and breathing over the ventilator. What is the most appropriate ventilator adjustment?