A database administrator could.....
1) Design a digital database for medical records that can be instantly transferred between clinics, unlike paper patient records.
2)Protect a bank accounts from hackers by adding security features to bank's financial database.
3) Make an inventory database for a chain of candy stores to help them keep the most popular candies in stock.
4)Create a database of DNA from people with multiple sclerosis to help researchers pinpoint the genes involved in the disease.