Solved

Help with table design?

Posted on 2009-07-10
2
214 Views
Last Modified: 2012-05-07
hi,

Can you take a look at my tables and see if I have correct PK & FK between tables.

MembersTable(userid,lname,fname,phone,office,createddate,createdby,modifieddate,modifiedby)
ProjectsTable(pid,pname,pstatus,startdate,enddate,customer,assigner,assignee,createddate,createdby,modifieddate,modifiedby)
TasksTable(tid,pid,taskname,parenttaskid,tdetail,tstatus,ttype,startdate,enddate,customer,assigner,assignee,createddate,createdby,modifieddate,modifiedby)
TaskTypesTable(ttid,taskType)
task might have a project. project will have at least one task.
userid will be used in assigner, assignee,createdby,modifiedby
Do I make assigner, assignee, createdby,and modifiedby as FK in ProjectsTable & TasksTable?

Thanks.
0
Comment
Question by:dkim18
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 31

Accepted Solution

by:
RiteshShah earned 300 total points
ID: 24828582
well, it is good to have FK for UserID so that even by mistake nothing could be entered in child table which is not exists in parent table.
0
 
LVL 60

Assisted Solution

by:chapmandew
chapmandew earned 200 total points
ID: 24830361
You'll want foreign keys for:

Members.UserID to Projects and Tasks (can't tell what fields...they should be named the same)
Tasks

Pretty much any type of lookup table you'll want to create a foreign key for integrity purposes.  You might also want to cosinder being a little more descriptive on your field names....for example, you could potentially create a FK from your members table to your modifiedby, createdby, customer, assigner fields, etc.  You know what I mean?
0

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article will provide a solution for an error that might occur installing a new SQL 2005 64-bit cluster. This article will assume that you are fully prepared to complete the installation and describes the error as it occurred durin…
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question