Second opinion on the time it would take to correct an issue with a database - repost

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We have a school database for a charity organization event. Schools are entered into the an administration panel of our system and then teachers are sent a code to login the portion of our site where they are able to register students, pick a lunch for each student and add the amount of wristbands they would like to have shipped to their school for fundraising purposes. At this present time having multiple schools registered under the same email causes an administrator with multiple schools to only be able to login to one school account.

The database structure has a flaw: non-unique IDs are used in places where unique IDs are required. This seems to have effects in various places of the application. We need someone with database expertise to look at the database, give an estimate and do the work.

We are effectively looking for a second opinion for what it would take to solve this problem from someone with many years experience with sql

Skills: Graphic Design, HTML, PHP, Website Design

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Project ID: #4756756

10 freelancers are bidding on average ₹20658 for this job

amitonline

Its a little difficult to make an exact estimate, but basically what you need is to add in secondary keys in relevant tables to create a composite unique key. Apart from the change in the db structure, the code will al More

₹22222 INR in 3 days
(31 Reviews)
6.7
alifinteractive

Hi, We have a dedicated team with 7 years of experience on PHP/MySQL, Ajax, Jquery, HTML, CSS, Javascript, Java/J2EE. Also having much experience on framework and CMS like 1) CakePHP 2) CodeIgniter 3) Zendframew More

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6.3
priyankjini

Hello Sir,I am a professional PHP, MySQL developer with 3+ years experience. Looking forward to hear from you. Please check PMB. Thanks.

₹26315 INR in 3 days
(48 Reviews)
6.0
rinosh

Expert here with 7 years of Expertise in PHP, MySQL.SQL Servers, if interested contact me

₹20000 INR in 3 days
(29 Reviews)
4.9
malcolmtechnolog

Hello, We have Experienced Professionals with 3.5 years of Web Development & Designing, Application Development, Desktop Application, ERP Software, Android App. Development. I-phone Development expertise. We have worke More

₹15789 INR in 10 days
(2 Reviews)
2.6
bhargavi2013

I ready to start work.

₹18888 INR in 3 days
(2 Reviews)
0.0
syedumairaziz

We are ready to start work i have a good professional team for that .You can check our work at trixiosolution.com

₹16666 INR in 4 days
(0 Reviews)
0.0
nasarabna

I have been doing work like this at work for the past 3 years. This can be done easily.

₹15000 INR in 3 days
(0 Reviews)
0.0
pointcode

We have gone through your requirements & we have done similar types projects before .We are ready to work on this project .we have efficient & sufficient resource to complete this project we have EXPERT senior team and More

₹30927 INR in 20 days
(0 Reviews)
0.0
GutqmlGXGLcQ

We are freelance software developers. If you contact us, we can give a quote for your project and we can discuss the details further. w w w . sol v e r . i o

₹23888 INR in 3 days
(0 Reviews)
0.0
kingmitra1

Your project looks interesting. With a team of expertise database professionals we would like to take up your project and work on it. Please check your PM for details.

₹16666 INR in 5 days
(0 Reviews)
0.0
esoftinfotech

Hello, We are professional with similar development expertise. We assure you best quality with unlimited number of revisions. Please view PM for know more about us. Thanks

₹18947 INR in 25 days
(0 Reviews)
0.0