A Digital Developer extends a system object, Product, and adds a Boolean attribute, "sellable," to it.
Assuming "prod" is the variable name handling the product, what code can the Developer use to access it?

Universal Containers wants to add a model field to each product. Products will have locale-specific model values.
How should the Digital Developer implement the requirement?

A Digital Developer needs to check for product inventory in a specific inventory list using the Open Commerce API.
An example request URL is:

Which resource_id value enables the appropriate resource?

A Digital Developer must give users the ability to choose an occasion (holiday, birthday, anniversary, etc.) for which gifts are currently being selected. The data needs to be persistent throughout the current shopping experience.
Which data store variable is appropriate, assuming there is no need to store the selection in any system or custom objects?

A Digital Developer needs to store information temporarily and decides to create a custom object.
Which code creates a custom object?