Design Of The Relational Database Structure

BUSINESS CASE
A healthy lifestyle advocacy group is aiming to build a bike-sharing system within a medium-size
metropolitan area. The group has signed a contract with a company to provide the bike-sharing
technology and hardware (bike stations, bikes, network equipment, a server, and bike-sharing software that automates the process of checking out and returning bicycles, and billing customers).
DOCKING STATIONS & BIKES
The docking station provides a limited number of bike parking spots and is characterized by its location, bike capacity, and real-time number of bikes parked. Docking stations have computers running on them, a credit card reader, and a networking module that allows them to be connected to the Internet. The fleet of bikes has also been purchased.
FUNCTIONING OF THE SYSTEM
There are two ways a user can get access to the system:
1) Using her annual subscription ($70)
2) Buying day pass ($5)
Every ride under 30 minutes is free. The user is charged $1 dollar for a ride between 30 and 1 hour, 3 dollars for rides between 1 hour and 2 hours, and a flat rate of 7 dollars for any ride over 2 hours. The users who haven’t returned a bike within 10 hours are billed with a $50 fine.

 

Design of the Relational Database Structure

Data in IS can be stored in the database. Relational databases is the most commonly used type of database.

Directions

Submit the following information in a Word document:

1. Create a table(s) to describe current and historical rides;

2. Write SQL statements that would perform the following tasks:

· Compute the average ride duration for a given user;

· Compute the number of bikes checked out at the given bike station;

Retrieve the list of all currently active users.

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