This is the 253rd most frequent Korean word.
만든
"Made" or "created."
The word '만든' is the adnominal form of '만들다' (to make), modifying '케이크' (cake) to specify that it is the cake made by the speaker.
이것은 내가 직접 만든 케이크야.
This is the cake I made myself.
Here, '만든' modifies '기록' (records) suggesting that it is talking about the records that someone created.
만든 기록을 잘 보관하세요.
Please keep the records you made well.
'만든' modifies '요리' (dish), indicating the dish that someone cooked yesterday.