Organization-Wide Defaults (OWD)

/*
  Organization-Wide Defaults (OWD) in Salesforce define the baseline level of access for records
  across the entire organization. OWD settings control the default level of access for objects 
  and specify whether records are visible to all users, only those in the same role hierarchy,
  or only the record owner. OWD settings can be set per object and are a fundamental aspect of 
  Salesforce's security model. They serve as the starting point for defining record access, 
  and additional sharing rules or manual sharing can be applied to further refine access.
*/

public class OWDAccessExample {
    // Accessing records based on the organization-wide defaults
    // Code logic here
}