CREATE TABLE Document_Drafts (document_id INT, draft_number INT, draft_details VARCHAR)
CREATE TABLE Ref_Document_Types (document_type_code CHAR, document_type_description VARCHAR)
CREATE TABLE Draft_Copies (document_id INT, draft_number INT, copy_number INT)
CREATE TABLE Documents (document_id INT, document_status_code CHAR, document_type_code CHAR, shipping_agent_code CHAR, receipt_date DATETIME, receipt_number VARCHAR, other_details VARCHAR)
CREATE TABLE Addresses (address_id INT, address_details VARCHAR)
CREATE TABLE Documents_Mailed (document_id INT, mailed_to_address_id INT, mailing_date DATETIME)
CREATE TABLE Roles (role_code CHAR, role_description VARCHAR)
CREATE TABLE Ref_Document_Status (document_status_code CHAR, document_status_description VARCHAR)
CREATE TABLE Employees (employee_id INT, role_code CHAR, employee_name VARCHAR, other_details VARCHAR)
CREATE TABLE Circulation_History (document_id INT, draft_number INT, copy_number INT, employee_id INT)
CREATE TABLE Ref_Shipping_Agents (shipping_agent_code CHAR, shipping_agent_name VARCHAR, shipping_agent_description VARCHAR)

Bar chart of the number of receipt date from each receipt date
SELECT receipt_date, COUNT(receipt_date) FROM Documents
SELECT "receipt_date", COUNT("receipt_date") FROM "Documents"