Computers & Internet - 22 September 2006

I'm a little fuzzy on a couple of Database tems, maybe I can get some clarification here.

First, primary keys-- can one table have >1 primary keys? Can an attribute be a primary key in two tables?

Second, foreign keys-- does every primary key have to have a foreign key.

Ex.
Lets say you have three tables:
student(name, studentID, address),
activity(activityID and leaderID) ,
school(schoolID, address),
and another table, say,
info, which links them all (studentID, activityID, schoolID, major).

Would all the entries(aside from major) be foreign keys in the info table?

2006-09-22 08:52:37 · 3 answers · asked by Jay B 1 in Programming & Design

If you know what I am talking about, can you please help me find one to download. The screen will either be a peaceful picture or a game and then a scary face pops up and screams. Thanks for your help!

2006-09-22 08:52:27 · 2 answers · asked by rainboweyed1 3 in Other - Computers

please help me

2006-09-22 08:49:27 · 6 answers · asked by abibabygurl09 1 in Internet

please help me

2006-09-22 08:49:17 · 10 answers · asked by abibabygurl09 1 in Internet

If and when the attachments do open, pictures appear as a white block with a small red X in the upper right hand corner. How do I corredt this? Thank you for the help.

2006-09-22 08:43:59 · 6 answers · asked by novarre1 1 in Internet

i hava brand new graphics card if that helps..

2006-09-22 08:43:21 · 4 answers · asked by Anonymous in Other - Hardware

2006-09-22 08:41:19 · 5 answers · asked by Kevin J 1 in Internet

web site like youtube.com?

2006-09-22 08:40:57 · 3 answers · asked by Les-Paul 3 in Internet

Does anyone think thats riduculous what price Directv charges for high speed internet?

2006-09-22 08:39:19 · 3 answers · asked by SWM 38 _4_ YOUNG GF 5 in Internet

Can someone tell me the very best FREE spyware remover?

2006-09-22 08:38:25 · 10 answers · asked by *Beth* 1 in Software

this would allow me to have people join this site and they can post for free/selling/buying this would be of great benifitt to this comunitity.
Thanks
Keith

2006-09-22 08:37:34 · 2 answers · asked by Keith N 2 in Internet

I am currently building a new computer, and i want to make sure i purchase the right operating system for the job. I have read good reviews about media center edition as well as Professional. But, on new egg.com, it has the OEM verision for considerbly less : http://www.newegg.com/Product/Product.asp?Item=N82E16832116049 Here it is $139.99 for professional. SO my QUESTION, really has to do with: Is it good to buy a OEM operating system when your building a system, as in does it run ok? Or should i go with retail?

2006-09-22 08:37:24 · 4 answers · asked by Project EX 3 in Software

I just got a new computer and I am giving away my old computer. On my old computer I have Norton Internet Security 2006. I have 472 days left until it expires. How can I put it on my new computer? I don't have the the CD because I downloaded it off symantec store.

2006-09-22 08:34:44 · 7 answers · asked by JC 1 in Security

i have a trojan virus and i dont know how to remove it. help?

2006-09-22 08:32:36 · 12 answers · asked by awall71688 1 in Security

In abode or yahoo they do not show up. abode says the file is damaged or an unsupported format any one help please?

2006-09-22 08:29:25 · 3 answers · asked by ianjohnpaul 3 in Software

I use BT Yahoo Mail. I would like to send the same email to everyone listed in my address book. I know how to insert all of the addresses into the " To Field ".

My question is will all the recipients see all of the addresses?

2006-09-22 08:27:47 · 21 answers · asked by Anonymous in Internet

I was sent an email from a friend that included 3 photos. All 3 photos are in .php format. Everything I'm finding on the net is that PHP has mostly to do with text documents. Am I incorrect in thinking this? What is the best way to view these pictures?

2006-09-22 08:27:24 · 1 answers · asked by Cheyenne 5 in Other - Computers

What do I do with / get / earn with points as I earn them?

2006-09-22 08:20:54 · 7 answers · asked by Gin & Tonic 4 in Other - Computers

I have changed the default(Enlgish) language to URDU, As my account was password protected Now I cannot login to my PC. Please any one let me know how to change my URDU language back to default from welcome screen without having to login.

2006-09-22 08:20:40 · 2 answers · asked by MIK 2 in Software

how can i get it to come up and how can i stop it from acting this way

2006-09-22 08:19:52 · 3 answers · asked by LovelyMe 2 in Programming & Design

2006-09-22 08:17:40 · 9 answers · asked by krystinah 2 in Software

i installed windows xp on my computer about three days ago and now it is trying to run windows xp and 2000 at the same time and i don't know how to delete windows 2000.

2006-09-22 08:16:51 · 6 answers · asked by Anonymous in Desktops

2006-09-22 08:16:25 · 2 answers · asked by Kathy S 1 in Monitors

my daughter keeps emailing people in search of penpals what should i do some of them are really dodgey sounding.
are there any safe penpal sites? and should i report the wierdos
will anything be done?

2006-09-22 08:16:23 · 12 answers · asked by rosyreal 2 in Internet

I would like to have a website where members can IM each other

2006-09-22 08:15:11 · 4 answers · asked by Juice 1 in Programming & Design

2006-09-22 08:13:23 · 4 answers · asked by cyndi w 1 in Internet

So that in order to have premium access to the internet, you will have to pay a monthly fee, as in paying to use Google and Yahoo?

2006-09-22 08:12:02 · 3 answers · asked by Feathery 6 in Internet

if we have more than 10 system if we wanna change system name how to do

2006-09-22 08:08:15 · 6 answers · asked by Anonymous in Computer Networking

We just bought a new computer, and it comes with only one hard drive bay (filled by the 80gb existing HD) I cannot replace the HD as it has XP on it and the new one does not. Our old computer came with an expansion slot for two 3.5" HDDs. the bay comes out so that it is essentially just the two bays. How can I put this in our new computer so that it will hold our extra 160GB HD?? (Have all screws for it and everything)

2006-09-22 08:07:58 · 5 answers · asked by Kremer 4 in Desktops

2006-09-22 08:05:59 · 2 answers · asked by Anonymous in Internet