Sharing Model

### Links - [ERD for sharing objects](https://mohan-chinnappan-n.github.io/sfdc/fs-cloud/model-sfdc.html) - [Record-Level Access: Under the Hood](https://resources.docs.salesforce.com/sfdc/pdf/salesforce_record_access_under_the_hood.pdf) - [Define Sharing Rules](https://trailhead.salesforce.com/en/content/learn/modules/data_security/data_security_sharing_rules)