Databases are used in most modern applications, whether the database is on your personal phone, computer, or the internet. An operational database system will store much of the data an application needs to function, keeping the data organized and allowing users to access the data.
If you were building an eCommerce app, some of the data you might access and store in your operational database system includes:
Customer data
-like usernames, email addresses, and preferences.
Business data
- like product colors, prices, and ratings.
Relationship data
- like the locations of stores with a specific product in stock.
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