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POShould I create multiple tables, or even databases for multiple users of a CRM
 

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  1. POShould I create multiple tables, or even databases for multiple users of a CRM
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    <p>I'm working on creating an application best described as a CRM. There is a relatively complex table structure, and I'm thinking about allowing users to do a fair bit of customization (adding fields and the like). One concern is that I will be reaching a certain level of scale almost immediately. We have about 50,000 individual users who will be coming online within about nine months of launch. So I want to build to last.</p> <p>I'm thinking about two and maybe even three options.</p> <ol> <li><p>One table set with a userID column on everything and with a custom attributes table created by creating a table which indexes custom attributes, then another table which has their values, which can then be joined to the existing contact records for the user. -- From what I've read, this seems like the right option, but I keep feeling like it's not. It seems like once these tables start reaching the millions of records searching for just one users records in every query is going to become a database hog.</p></li> <li><p>For each user account recreate the table set, preened with a unique identifier (the userID for example.) Then rather than using a WHERE userID=? everywhere I can use a FROM ?_contacts. For attributes I could then have a custom attributes table where users could add additional columns for custom attributes. -- This feels like the simplest way to go, though, of course when I decide to change the database structure there would be a migration from hell. </p></li> <li><p>The third option, which I'm pretty confident is wrong, but for that reason alone I can not rule out, is that a new database should be created for each user with all the requisite tables.</p></li> </ol> <p>Am I crazy? Is option one really the best?</p>
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    1. UScfkane
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    1. CO50,000 users. How many companies?
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      1. USMike Sherrill 'Cat Recall'
    2. COThis answer could be useful - http://stackoverflow.com/a/876459/1048425
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      1. USGarethD
    3. CO@MikeSherrill'Catcall' I hate it when people are all sketchy about the details of their IP, but in this case I kind of have to. The net result is that while the app is like a CRM in structure it's not one, so the 50k users won't have shared data within their organiztions.
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      1. UScfkane
 

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