1. Learn
    2. /
  2. Courses
    3. /
  3. Database Design

Exercise

Querying the dimensional model

Here it is! The schema reorganized using the dimensional model:

Let's try to run a query based on this schema. How about we try to find the number of minutes we ran in July, 2019? We'll break this up in two steps. First, we'll get the total number of minutes recorded in the database. Second, we'll narrow down that query to week_id's from July, 2019.

Instructions 1/2

undefined XP
    1
    2
  • Calculate the sum of the duration_mins column.