Database scheme

Collections

/users/{userId}
- /transactions/{transactionId} -> create by cloud function only, read only by user
/donations/{donationId} -> after create, the donor has read-only permission,
- /answers/{answerId} -> only creator, assigned collector and center-admins can read and write
/services/{serviceId} -> auto create by cloud function if donation needs delivery (COLLECTOR)
- /answers/{answerId} -> only creator and assigned service prodiver and associated Minga-admins can read and write
/questions/{questionId} -> general discussion on the platform, sorted by geo-location
- /answers/{answerId}
/centers/{centerId}
- /admins/{adminId}
- /inventory/{inventoryId} -> automatically created after a verification process once a donation is arrived
/offers/{offerId} -> food offers from distribution centers
/productCategories/{productCategoryId} -> product classifications
/voluntaryWorkCategories/{voluntaryWorkCategoryId} -> service classifications