what's Arduino's SDK "software development kit" ((uno V3))

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1

hello,
i bought arduino uno v3 i want to know it's SDK "software development kit" because i want to connect it with database program with using USB caple
hope u help me
thank u

2

i want to know it's SDK "software development kit"

There isn't one. It is an embedded processor so what you do is to write your own programs in C/C++ on it and run them.
Therefore you can make your arduino look like anything.

i want to connect it with database program with using USB caple

Then you have to write a program to do that both at the arduino end and the PC end.

If you have a leonardo or an Arduino Micro then you can make this look like a keyboard to a PC and perhaps get it to type directly into your data base.