As a newcomer to MongoDB and Mongoose, I am facing a dilemma when it comes to sorting out conflicts between the schema and the database. Specifically, if I have an existing database in place and then decide to update the schema in my project by adding defaults, how can I effectively implement those changes in the database?
Expanding a Mongoose schema typically doesn't require explicit synchronization with the database, as MongoDB is schemaless and isn't concerned about the data stored in it.
Mongoose handles things like defaults, so adding defaults to your schema will work smoothly. However, keep in mind that changing the type of a field or removing uniqueness constraints may require manual intervention. For example, if you change a field from Number to String, existing database documents won't automatically update.
If you had fields marked as unique before and decide to remove the uniqueness constraint from your schema, you'll need to manually remove the unique index created by Mongoose.
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