The COVID-19, is the biggest pandemic for a number of reasons. It's a kind of virus, meaning no one has immunity, and there is no vaccine. Therefore, to prevent this virus a “C19Tracker” is proposed to be invented. Having the following features: 1. Live data: Shows the most recent data, and updates automatically. 2. Distribution map with two levels of details: Countries: When the user zooms out. Fewer details and reduced clutter. Cities: When the user zooms in. More details. 3. Charts: Current state chart for all countries (and cities). Timeline chart for all countries (and cities). Top affected countries chart with info about every country. 4. Search for countries & cities. 5. Today widget for worldwide stats. 6. Red color scale: Reflects the number of confirmed cases. In addition to increasing circle size. 7. ipad support. Q) Considering Mc Call’s quality factor model. Mention any 4 quality factors necessary for this application (with proper reasoning).

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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The COVID-19, is the biggest pandemic for a number of reasons. It's a kind of virus, meaning no
one has immunity, and there is no vaccine. Therefore, to prevent this virus a “C19Tracker” is
proposed to be invented. Having the following features:
1. Live data: Shows the most recent data, and updates automatically.
2. Distribution map with two levels of details:

Countries: When the user zooms out. Fewer details and reduced
clutter.
Cities: When the user zooms in. More details.
3. Charts: Current state chart for all countries (and cities).
Timeline chart for all countries (and cities).
Top affected countries chart with info about every country.

4. Search for countries & cities.
5. Today widget for worldwide stats.
6. Red color scale: Reflects the number of confirmed cases. In addition to increasing circle
size.
7. ipad support.

Q) Considering Mc Call’s quality factor model. Mention any 4 quality factors necessary for this application (with proper reasoning). 

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