Why is nitric acid often used to digest any solid sample?

Why is $\ce{HNO3}$ often used to digest any solid sample?

I heard many solid samples often digested with $\ce{HNO3}$ solution because nitrate compound always dissolve in water.

Is the concept correct or not?

• Could you clarify what do you mean by a sample – Avnish Kabaj Jan 5 '18 at 6:04
• For example, in analytical chemistry, when we would like to analyze solid sample. It is often use HNO3 acid to digest it into the solution before. – I. Kor Jan 5 '18 at 6:27

This is pretty much correct. Nitric acid is a convenient oxidizing acid which will dissolve most of the metals (except for $\ce{Au}$, $\ce{Ta}$ and elements of platinum group), forming either oxides or nitrates; sulfur is oxidized to sulfate; phosphorus to phosphate; organics is oxidized and nitrated. This assures consistent predictable products in probe preparation.