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How can I confirm a database is Oracle & what version it is using SQL?

I'm building an installer for an application. The user gets to select a datasource they have configured and nominate what type of database it is. I want to confirm that the database type is indeed Oracle, and if possible, what version of Oracle they are running by sending a SQL statement to the dat...
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How to make Twitter bootstrap modal full screen

How do I make a twitter bootstrap modal popup full screen for the above code, I tried playing around with css but was not able get it the way I wanted. Can anyone please help me with it. ...
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Pandas - How to flatten a hierarchical index in columns

I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation): 17 Answers ...
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]

I've been reading some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used? ...
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What's the best way to send a signal to all members of a process group?

I want to kill a whole process tree. What is the best way to do this using any common scripting languages? I am looking for a simple solution. ...
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How to get the source directory of a Bash script from within the script itself?

How do I get the path of the directory in which a Bash script is located, inside that script? 67 Answers ...
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What do hjust and vjust do when making a plot using ggplot?

Every time I make a plot using ggplot, I spend a little while trying different values for hjust and vjust in a line like 2...
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Animation CSS3: display + opacity

I have got a problem with a CSS3 animation. 15 Answers 15 ...
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What is the fastest integer division supporting division by zero no matter what the result is?

Summary: 4 Answers 4 ...
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Why is (object)0 == (object)0 different from ((object)0).Equals((object)0)?

Why are the following expressions different? 7 Answers 7 ...