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How to design a database for User Defined Fields?

... If performance is the primary concern, I would go with #6... a table per UDF (really, this is a variant of #2). This answer is specifically tailored to this situation and the description of the data distribution and access pa...
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How do you create a yes/no boolean field in SQL server?

... And if you link the table in an Access database, true will have the value -1 and false will have the value 0. At least in Access 2003. (This is the version I had handy that was connected to a customer's MSSQL database). ...
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@Transactional(propagation=Propagation.REQUIRED)

if some one can explain what this annotation do and when exactly we use it : 4 Answers ...
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How to round a number to n decimal places in Java

... convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations. ...
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This Handler class should be static or leaks might occur: IncomingHandler

... If IncomingHandler class is not static, it will have a reference to your Service object. Handler objects for the same thread all share a common Looper object, which they post messages to and read from. As messages contain ...
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What is the difference between Session.Abandon() and Session.Clear()

What is the difference between destroying a session and removing its values? Can you please provide an example demonstrating this? ...
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How do I kill all the processes in Mysql “show processlist”?

...T"); while ($row=mysql_fetch_array($result)) { $process_id=$row["Id"]; if ($row["Time"] > 200 ) { $sql="KILL $process_id"; mysql_query($sql); } } share | improve this answer ...
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Why does Google +1 record my mouse movements? [closed]

...<< 16) + event.Y) * (new Date().getTime() % 1000000); c = c * b % d; if (previousMouseMoveHandler) previousMouseMoveHandler.call(arguments); d is (screen.width * screen.width + screen.height) * 1000000, and c is a variable that starts out as 1. All of this is wrapped in the scope of an anon...
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Identifying and removing null characters in UNIX

...I’d use tr: tr < file-with-nulls -d '\000' > file-without-nulls If you are wondering if input redirection in the middle of the command arguments works, it does. Most shells will recognize and deal with I/O redirection (<, >, …) anywhere in the command line, actually. ...
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What is the difference between IEqualityComparer and IEquatable?

... Same difference is between IComparable / IComparer – boctulus Jan 19 '15 at 21:22 ...