All game data is saved on the game cartridge itself. The DS does not have internal memory for saving game data - the DSi has a memory card, but also does not save game data to it.
the cartridge
You can't download games for DS lite because you need a game cartridge for the console.
The game ID for a Nintendo DS game can be found on the cartridge. There will be a code, which is specific for each DS game.
A game cartridge for the DS is called a game card.
All game data is saved on the game cartridge itself. The DS does not have internal memory for saving game data - the DSi has a memory card, but also does not save game data to it.
the cartridge
The data is saved onto the cartridge. Remember that the DS and DS lite do not have internal memory.
You can't download games for DS lite because you need a game cartridge for the console.
Data is saved on the cartridge itself. It doesn't matter what system the cartridge is played on - no user data is stored on the console, except wi-fi settings.
The save data is saved to the cartridge itself, not the DS.
Yes, the game is saved on the actual DS card, not the console.
Game Boy Advance game cartridge. They can be played on the DS by placing them in the GBA cartridge slot in the bottom of the DS.
No. DS save data is saved to the game card, not the console.
No the Nintendo DS does not have a memory card. The game cartridges contain the saved file information on them. Therefore, you cannot play your file of a game on somebody else's game cartridge.
It is not possible to delete the campaign game in Zoo Tycoon 2 on the Nintendo DS games console. All you can do is delete the saved game data.
The R4DS cartridge is to be inserted into the DS's Slot 1, as a regular Game Card would be inserted, the label facing away from the console.