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What is NoSQL, how does it work, and what benefits does it provide? [closed]
...ric RDBMS, but still enough functionality to be useful. In a way it's like MySQL, which at one time lacked support for transactions but, exactly because of that, managed to outperform other DB systems. If you could write your app in a way that didn't require transactions, it was great.
Why would it ...
SQL select join: is it possible to prefix all columns as 'prefix.*'?
...iginal" names.
Maybe not the best solution but it works for me....i'm use mysql
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Storing Image Data for offline web application (client-side storage database)
...able for most databases using localhost on a suitable port (e.g., 3306 for MySQL). I believe the applet tag is deprecated in Html5 but it still works. No experience on Android tablets, so can't comment on that part.
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How to encrypt/decrypt data in php?
...INARY.
The output value, like the IV, is binary; to store those values in MySQL, consider using BINARY or VARBINARY columns. If this is not an option, you can also convert the binary data into a textual representation using base64_encode() or bin2hex(), doing so requires between 33% to 100% more st...
best practice to generate random token for forgot password
...o separate the lookup from the validation.
If your table looks like this (MySQL)...
CREATE TABLE account_recovery (
id INTEGER(11) UNSIGNED NOT NULL AUTO_INCREMENT
userid INTEGER(11) UNSIGNED NOT NULL,
token CHAR(64),
expires DATETIME,
PRIMARY KEY(id)
);
... you need to add ...
Why does direction of index matter in MongoDB?
...
Thanks for further clarification. I checked the docs for MySQL indexes - it really is possible to specify index direction, but the setting is ignored.
– johndodo
Apr 26 '12 at 12:57
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How to avoid null checking in Java?
...en just disable them. No one implied that the behaviour is not documented. MySQL is written in C where dereferencing null pointers is undefined behaviour, nothing like throwing an exception.
– fgb
Apr 8 '13 at 0:39
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source of historical stock data [closed]
...nd it will be able to store the data in a database of your choice: MS SQL, MySQL, SQLite, etc. It's open source, but I'll post more information on my blog when I get closer to releasing it (within a couple of days).
Another option is eclipse trader... it allows you to record the historical data wit...
How to design a database for User Defined Fields?
...out this solution here: http://backchannel.org/blog/friendfeed-schemaless-mysql
Or you can use a document-oriented database, where it's expected that you have custom fields per document. I'd choose Solr.
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...nstead. See also How to insert uploaded image from p:fileUpload as BLOB in MySQL?
Another potential problem with native API will manifest is when the upload component is present in a form on which a different "regular" ajax request is fired which does not process the upload component. See also File...