database schema for timesheet

Question

Could someone help me with a rough database schema for a timesheet application where the i would be able to

1. Store hours per day for a time period ( 2 weeks ) fo

Answer 1

The following code is taken from the ]project-open[ open-source system in PostgreSQL syntax and edited.

Please note the "conf_objects" table with approval/confirmation information. When the user "submits" a time sheet, all submitted hours are assigned to a new conf_object. It's the job of the supervisor to set the status of the conf_object to "approved". Both the supervisor or the user may delete the conf_object at any time, which will will mark the hours as "not submitted" (hour.conf_object_id = NULL) again, so that these hours will end up on the "Hours Not Submitted" report.

CREATE TABLE projects (
    project_id                      integer constraint projects_pk primary key,
    project_name                    text not null,
    parent_id                       integer constraint projects_parent_fk references projects,
[...]
    project_type_id                 integer not null constraint projects_prj_type_fk references categories,
    project_status_id               integer not null constraint projects_prj_status_fk references categories,
    description                     text,
    start_date                      timestamptz,
    end_date                        timestamptz
);


CREATE TABLE users (
    user_id integer constraint users_pk primary key,
    first_names text,
    last_name text
[...]
);

-- Confirmation (=approval) objects
CREATE TABLE conf_objects (
    conf_id         integer constraint conf_id_pk primary key,
    conf_status_id  integer constraint conf_status_nn not null
);


CREATE TABLE hours (
    user_id                 integer constraint hours_user_id_nn not null constraint hours_user_id_fk references users,
    project_id              integer constraint hours_project_id_nn not null constraint hours_project_id_fk references projects,
    day                     date constraint hours_day_nn not null,
    hours                   numeric(5,2) not null,
[...]
    note                    text,
    conf_object_id          integer constraint hours_conf_object_fk references conf_objects
);

The original ]po[ SQL statements are included in the ~/packages/intranet-*/sql/postgresql/intranet-*-create.sql creation scripts.