It is also natural English, as it is a common way to express this idea. The sentence is in the past tense, as it is describing an event that has already happened. The word "but" is used to introduce a contrast, in this case the fact that the DNA did not match any records in the missing person database. The sentence is grammatically correct, as all of the words are used correctly and in the correct order. The sentence is also clear and easy to understand, as it uses simple language and avoids any jargon or technical terms. Here is another way to write the sentence, which is also correct and natural English: We ran the DNA through the missing person database, but there was no match. This sentence uses the present perfect tense, which is often used to describe events that have happened recently or that are still relevant to the present. The word "but" is used in the same way as in the previous sentence. The two sentences are both correct and natural English, but they have different nuances. The first sentence emphasizes the fact that the DNA did not match any records in the database, while the second sentence emphasizes the fact that there was no match at all. Ultimately, the best way to decide which sentence to use is to consider the context in which you are using it. If you are emphasizing the fact that the DNA did not match any records, then the first sentence is a good choice. If you are emphasizing the fact that there was no match at all, then the second sentence is a good choice.

Yes it’s natural