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What's the difference between identifying and non-identifying relationships?
I haven't been able to fully grasp the differences. Can you describe both concepts and use real world examples?
15 Answers
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Saving image from PHP URL
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If you have allow_url_fopen set to true:
$url = 'http://example.com/image.php';
$img = '/my/folder/flower.gif';
file_put_contents($img, file_get_contents($url));
Else use cURL:
$ch = curl_init('http://example.com/image.ph...
How do you use variables in a simple PostgreSQL script?
...ple does not work. ERROR: query has no destination for result data HINT: If you want to discard the results of a SELECT, use PERFORM instead. CONTEXT: PL/pgSQL function inline_code_block line 7 at SQL statement
– Jasen
Dec 31 '16 at 1:34
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How do I access my SSH public key?
...add; ssh-add -l'
or public key:
ssh-agent sh -c 'ssh-add; ssh-add -L'
If you've the message: 'The agent has no identities.', then you've to generate your RSA key by ssh-keygen first.
share
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im...
TortoiseHg Apply a Patch
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I have two modified images on a separate branch and I want to merge that changeset to my default branch via a patch. But import does nothing. It just closes the window and no are being updated as well. What could be going wrong? Nothing is...
How can I copy & paste, or duplicate, an existing project?
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hmmm.. my browser did not notify me of a new answer ... hence duplicate
– Redlab
Jun 28 '10 at 15:13
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How can I force gradle to redownload dependencies?
... next build Gradle would attempt to download them again.
What is your specific use case? Do you use dynamic dependency versions or SNAPSHOT versions?
On Unix systems, you can delete all the existing artifacts (artifacts and metadata) Gradle has downloaded using:
rm -rf $HOME/.gradle/caches/
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How to check if an int is a null
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An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can't...
jQuery: Test if checkbox is NOT checked
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One reliable way I use is:
if($("#checkSurfaceEnvironment-1").prop('checked') == true){
//do something
}
If you want to iterate over checked elements use the parent element
$("#parentId").find("checkbox").each(function(){
if ($(this).prop('c...
Install a .NET windows service without InstallUtil.exe
... inst.UseNewContext = true;
try
{
if (undo)
{
inst.Uninstall(state);
}
else
{
inst.Install(state);
inst.Commit(state);
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