Creation of Junction Tables in a data model


I am looking for an expert in data modelling. We have a database design which stores multiple entities in a many-to-many relationship setting. There is a table with multiple users and there is a table with multiple campaigns. A user can vote on multiple campaigns. A campaign can exist of multiple votes by different user. Each user can only vote once every campaign (just for your information).

A simplified view of the database is attached in an Excel file. Because of Excel's limit to support many-to-many relationships, junction tables need to be created. I would like advice on how to design the junction tables and make the attached data-model work with one-to-many and many-to-one.

Skills: Big Data, Database Administration, MySQL, Software Architecture

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Project ID: #5225273

11 freelancers are bidding on average €138 for this job


Hi ready to start i had more than 5 year experience in the php , mysql , jquery etc.. so let me know your view Thanks

€195 EUR in 5 days
(129 Reviews)

<<TOP RANKED PROGRAMMER AND DATABASE EXPERT>> Done 600+ projects. I am highly interested in getting this project done for you. Thanks

€144 EUR in 3 days
(106 Reviews)

Dear Sir, I have read your exell file and completely understood what you need. I can design your database based on your relation. I am Mysql Dabase Administrator. So I can design a normalized database sch More

€155 EUR in 3 days
(43 Reviews)

Hi, I'm very interested helping you designing your database, I have more then 7 years of experience in SQL and database administration, modeling, and manipulating, please do not hesitate to check my portfolio, there is More

€150 EUR in 5 days
(22 Reviews)

Hi, I have more than 14 years of exp and I am expert in this kind of work. I have completed more than 200 projects. Please look at the feedback left by my employer to know more about my work. Waiting for your positive More

€111 EUR in 3 days
(36 Reviews)

DATABASE EXPERT... CHECK MY BADGES... This is easy project and it can be delivered very fast. Unfortunately I'm available on for the weekend, so if you react soon, you can count to get your database until Sunday eveni More

€133 EUR in 2 days
(15 Reviews)

Hi, I have been working as Database Analyst more than 9 years. Earlier I completed B.Sc. Engg and M.Sc. Engg both in computer engineering. Thanks

€155 EUR in 4 days
(11 Reviews)

Hi, I am an expert in Database design and I have knowledge and experience in Entity Relationship modeling and designing. I can do this task for you. Thank you.

€100 EUR in 5 days
(12 Reviews)

I have +4 year experiences in data modeling . To provide well documented , quality and result oriented work Thanks & Regards Hardik G. Dumaswala

€155 EUR in 7 days
(2 Reviews)

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€55 EUR in 2 days
(0 Reviews)

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€155 EUR in 3 days
(0 Reviews)

Dear Sir Hi, Greetings of the day and thanks for sharing these details and allowing me to bid on this assignment. yes we have similar experience and can deliver u as u have mentioned in your requirements. we More

€185 EUR in 9 days
(0 Reviews)

I am an experienced PHP Programmer, and have worked with it for many years. I also specialise in Graphic Designing. I am also experienced in Graphic Design and HTML. I am looking to be hired and work on projects More

€170 EUR in 7 days
(1 Review)