* Data: This is the most likely meaning, especially in a technical context.
* Don't tell anyone: This is a less common meaning, usually used in a humorous way.
* Did the assignment: This is a possible meaning in an academic context.
It's important to consider the context where you saw or heard "DTA" to understand its meaning.
For example, if you saw it in a conversation about computers, "data" is the most likely interpretation. But if you saw it in a text message between friends, "don't tell anyone" might be a better fit.
If you can provide more context, I might be able to give you a more accurate answer.