DROP TABLE IF EXISTS mocha_attributes;

CREATE TABLE mocha_attributes
(
    id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
    tenant_id INT,
    src_inst_id INT,
    att_inst_id INT,
    usr_inst_id INT,
    att_effective_date DATETIME,
    att_value TEXT,
    
    INDEX `att_index_FI_1`
        (tenant_id, src_inst_id, att_inst_id),

    CONSTRAINT `att_inst_id_FK_tenant`
        FOREIGN KEY (`tenant_id`)
        REFERENCES `mocha_tenants` (`id`),

    CONSTRAINT `att_inst_id_FK_src`
        FOREIGN KEY (`src_inst_id`)
        REFERENCES `mocha_instances` (`id`),

    CONSTRAINT `att_inst_id_FK_att`
        FOREIGN KEY (`att_inst_id`)
        REFERENCES `mocha_instances` (`id`),

    CONSTRAINT `att_inst_id_FK_usr`
        FOREIGN KEY (`usr_inst_id`)
        REFERENCES `mocha_instances` (`id`)
);