It depends on your career goal & interest. During MCA programme you need to study Accounting, Mathematics, Programming Languages like C, Java, ASP .Net, Web Development etc. There are enormous opportunities for MCA graduate, After completing MCA programme you can work as Programmer, Database Administrat or Application Developer, Systems Analyst, Work as an entrepreneur, Web Designer, in Multimedia Applications etc.

If you wish to go for Research area or teaching profession then I would suggest you to go for M.Sc programme with your desired specialization.

Good Luck!