db design ideas for video class site [closed] - mysql

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I'm developing a mockup of a video lessons website and I would like to talk to you about the best way to design the course database; I was thinking either of importing the tree structure json of each single course, or of creating a table for each course and a main table with secondary info
This site will be deployed in html, js and php

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How does MySQL do I/O? [closed]

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I was wondering how MySQL (and other databases for that matter) work under the hood. Do they use standard C I/O calls like fseek to find a record?
Here is the link to the source code. From a quick review of the file I can confirm that there are multiple check that is been done before and after an insert. It's actually a great idea to review the whole file very interesting.

Store blog files [closed]

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I wanna coding a blog website but I don't know how to store blog posts (include texts, images, etc) in server and how to make a form that I can type my post in.
It's such as posting a status in facebook
Sorry, my english is so bad
There's BLOB, CLOB, etc. data types to store binary data in MySQL.

Facebook Timeline Database? [closed]

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I was reading an article about facebook timeline https://www.facebook.com/note.php?note_id=10150468255628920
I always thought this kind of core produces would prefer Cassandra. However it is using MySQL/InnoDB.
Could anyone briefly explain why?
Available internal / external expertise with MySQL (it's easier to google solutions for existing problems)
Cassandra is much harder to reason about due to eventual consistency and limited transaction support
Moving to a new datastore is a lot of pain and it doesn't seem to be justified
You can check out the slides below for their usecases:
MySQL at Facebook
Scale at Facebook

Create a dashboard for online users [closed]

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I have a requirement and i think i need your help to start it.Actually i have created an application which monitors the status of users which are saved in mysql database with their status.By status i mean 4 types Online,Offline,LoggedIn,LoggedOff.So according to these status i need to display them on the dashborad.Isearched in internet about possible plugins or something,but alas! couldn't find any relevant article.I think this needs css.I am not sure how to start it.Can anyone share some ideas about the same ?
You should start with Bootstrap framework, it is created atop of CSS and JS. Here is nice template that you can use as a starting point. SB Admin 2

how do i build a website using access 2010? [closed]

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has anyone done this yet? please show me some good tutorials on building websites with databases using ACCESS 2010
you can build a website using it: http://www.youtube.com/watch?v=AU4mH0jPntI