.NET Core Microservices - Add to Shopping Cart Repository Method

The video tutorial explains the process of creating and updating a card in a repository. It covers the necessary dependencies, logic for handling card headers and details, checking product existence in the database, and using async methods to save changes. The tutorial also discusses creating new headers and details when needed, ensuring data consistency in the shopping cart database.

What happens if the product does not exist in the database when trying to add it to the shopping cart?

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What steps should be taken if the card header is not found in the database?

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How do you ensure that the card details do not conflict with existing products in the database?

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