1. Variables:
   • Local: prefix with l_ (e.g., l_counter).
   • Global: prefix with g_ (for those declared in a package specification).
2. Parameters:
   • Prefix with p_ (e.g., p_emp_id).
3. Cursors:
   • Prefix with cur_ (e.g., cur_employee).
4. Constants:
   • Prefix with c_ (e.g., c_max_value).
   • Uppercase for constants (e.g., MAX_VALUE).
5. Types:
   • Prefix with t_ (e.g., t_employee_table for a table type).
6. Exception:
   • Prefix with ex_ or err_ (e.g., ex_no_data).
7. Records:
   • Suffix with _rec or _type (e.g., employee_rec).
8. Arrays/Collections:
   • Suffix with _tbl or _list (e.g., employee_list or employee_tbl).
9. Procedures/Functions:
   • Procedures: use verbs (e.g., update_employee, calculate_bonus).
   • Functions: names reflecting return value (e.g., get_employee_salary).
10. Boolean variables:
    • Prefix with is_, has_, or can_ (e.g., is_valid, has_records).
11. Tables/Views:
    • Tables: use plural names (e.g., employees).
    • Views: prefix with v_ or suffix with _view (e.g., v_active_employees, employee_summary_view).
12. Indexes:
    • Prefix with idx_ (e.g., idx_emp_name).
13. Triggers:
    • Reflect timing and event (e.g., before_insert_emp).
14. Packages:
    • Name based on functionality (e.g., pkg_employee_operations).

Note: The key to effective naming is consistency. Always apply your chosen conventions uniformly.