What's the difference between 'collision' and 'conflict'? In SQL language, should I say 'PK collision' or 'PK conflict'?
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A collision is usually taken to mean a physical impact: two cars which crash into each other would be a collision. A conflict is normally between two or more things which disagree in some way, although its meaning can be extended across both tangible and intangible notions. For instance, you can have a conflict of opinions, where someone disagrees with the other, but you can also have a physical conflict (a fight, or a war). Conflict, used in its physical sense, could be synonymous with collision. In your case, you should say a Primary Key (PK) Conflict, as — and I'm assuming it's a duplicate here — the primary keys disagree with each other because they are the same. They don't physically bump into each other. |
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For the First Question -
Conflict And for the second question you should call it as Primary Key Conflict. |
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