service/src/main/resources/db/migrations/postgresql/V1__initial_setup.sql

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CREATE TABLE IF NOT EXISTS horus_offices ( id BIGSERIAL, parent_office_id BIGINT NULL, identifier VARCHAR(32) NOT NULL,a_name VARCHAR(256) NOT NULL, description VARCHAR(2048) NULL, created_by VARCHAR(32) NOT NULL, created_on TIMESTAMP(3) NOT NULL, last_modified_by VARCHAR(32) NULL, last_modified_on TIMESTAMP(3) NULL,
                                           CONSTRAINT office_pk PRIMARY KEY (id), CONSTRAINT office_identifier_uq UNIQUE (identifier),CONSTRAINT office_parent_fk FOREIGN KEY (parent_office_id) REFERENCES horus_offices (id) ON UPDATE RESTRICT );

CREATE TABLE IF NOT EXISTS horus_addresses ( id BIGSERIAL, office_id BIGINT NOT NULL, street VARCHAR(256) NOT NULL, city VARCHAR(256) NOT NULL,region VARCHAR(256) NULL, postal_code  VARCHAR(32)  NULL, country_code VARCHAR(2)   NOT NULL, country VARCHAR(256) NOT NULL,
                                             CONSTRAINT address_pk PRIMARY KEY (id),
                                             CONSTRAINT address_office_fk FOREIGN KEY (office_id) REFERENCES horus_offices (id) ON UPDATE RESTRICT);

CREATE TABLE IF NOT EXISTS horus_employees ( id BIGSERIAL, identifier VARCHAR(32)  NOT NULL,given_name VARCHAR(256) NULL, middle_name VARCHAR(256) NULL,surname VARCHAR(256) NULL, assigned_office_id BIGINT NULL, created_by VARCHAR(32) NOT NULL,created_on TIMESTAMP(3) NOT NULL,last_modified_by VARCHAR(32) NULL,last_modified_on TIMESTAMP(3) NULL,
                                             CONSTRAINT employee_pk PRIMARY KEY (id),
                                             CONSTRAINT employee_identifier_uq UNIQUE (identifier),
                                             CONSTRAINT employee_office_fk FOREIGN KEY (assigned_office_id) REFERENCES horus_offices (id) ON UPDATE RESTRICT);

CREATE TABLE horus_contact_details ( id BIGSERIAL, employee_id BIGINT NOT NULL, a_type VARCHAR(256) NOT NULL, a_group VARCHAR(256) NOT NULL,a_value VARCHAR(256) NOT NULL, preference_level INT NULL,
                                        CONSTRAINT contact_detail_pk PRIMARY KEY (id),
                                        CONSTRAINT contact_detail_employee_fk FOREIGN KEY (employee_id) REFERENCES horus_employees (id) ON UPDATE RESTRICT);