Hi,
I believe you are installing Custom Asset Viewer. In that case follow the below steps. (If it is not obvious, we can update the document).
1. From windows, search and open pgAdmin III
2. select postgresSQL 9.4 and connect.
3. Enter the password.
3. Select Databases and Rightt Click. Create New Database. Name=mfg and Owner=twadmin
4. Select mfg database. Then SQL icon on the top.
5. Make sure on the top connection if pointing to "mfg on postgres@localhost:5432"
6. Now open the file in the SQL editor (File -> Open). Select dataloader.sql
7. Delete the CREATE statement since you already created the database.
8. Execute the rest of the statements.
9. Make sure to commit.
This should get this going. Let me know if you have any question.
Thanks,
Varathan