Before you decide what course to do, if you have any particular company you want to work for, then do a little research and find out which certifications that company prefers. It'll help you get a job in that company. Here are some valuable certifications for a Data Modeler:
- Amazon Web Services (AWS) Certified Big Data - Specialty
- Cloudera Certified Associate (CCA) Administrator
- EMC Proven Professional Data Scientist Associate (EMCDSA)
- IBM Certified Data Architect – Big Data
- MapR Certified Data Analyst 1.9
- MapR Certified Hadoop Developer 1.0
- Microsoft Certified Solutions Expert (MCSE): Data Management and Analytics