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Difference Between Schema / Database in MySQL

Is there a difference between a schema and a database in MySQL? In SQL Server, a database is a higher level container in relation to a schema. ...
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Elegant way to invert a map in Scala

Learning Scala currently and needed to invert a Map to do some inverted value->key lookups. I was looking for a simple way to do this, but came up with only: ...
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Difference between a user and a schema in Oracle?

What is the difference between a user and a schema in Oracle? 15 Answers 15 ...
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PHP - How to check if a string contains a specific text [duplicate]

Suppose I have the code above, how to write the statement "if($a exist 'some text')"? 8 Answers ...
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What does “dereferencing” a pointer mean?

Please include an example with the explanation. 6 Answers 6 ...
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What is the meaning and difference between subject, user and principal?

In the context of security frameworks, a few terms commonly occur subject , user and principal , of which I have not been able to find a clear definition and the difference between them. ...
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When to use Common Table Expression (CTE)

I have begun reading about Common Table Expression and cannot think of a use case where I would need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitati...
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Conditional Variable vs Semaphore

When should one use a semaphore and when should one use a conditional variable (CondVar) ? 6 Answers ...
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How to make a display in a horizontal row

How can I make my list items appear horizontally in a row using CSS? 7 Answers 7 ...
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What is a “static” function in C?

The question was about plain c functions, not c++ static methods, as clarified in comments. 12 Answers ...