Detailed Explanation:
In ServiceNow, tables with names that start with u_ or x_ areCustom Tables. The prefix u_ is automatically assigned to custom tables created within a ServiceNow instance to distinguish them from core (standard) tables. Tables with the x_ prefix indicate they are custom tables associated with a scoped application, created within a ServiceNow application scope. Custom tables are crucial for extending ServiceNow's functionality and tailoring applications to meet specific business requirements. (Reference: ServiceNow Documentation - Custom Tables and Table Naming Conventions)