The database management software maker could still have plenty of room to grow.MongoDB (MDB -0.79%) has generated impressive gains since its IPO. The database management software maker went public at $24 a share in October 2017, and it now trades in the mid-$250s with a market cap of $19 billion.It impressed investors with its rapid growth, rising gross margins, and exposure to the booming artificial intelligence (AI) market. But can it expand and evolve into a trillion-dollar company by 2050? Let's review ...