Identifying questions which require databases to answer. These lessons may not be used for professional development without purchase of a site license.
Databases are good tools to weigh the importance of variables .
It is very important to understand what variables are. Variables usually interact with each other. A high school runner who wants to optimize performance may keep a chart showing the relationship between race times and key variables such as sleep , diet , mood , number of miles run per week and types of workouts performed each day. We build a database to test which variable has the most powerful effect on the one we hope to change or improve. Explain your choice in your word processor.