hi,

see there is some bit difference in course structure of msc in computer science and mca i.e master of computer application, mca course has the syllabus of computer programming mainly, consists of different high level language application and coding methodology, candidates after passing mca may work as an programmer, whereas msc course is mainly mathematics oriented and deep study involved in using data analytics, system analysis and design, advance computer application.

as far as indian industry demand mca is more relevant to get job in mncs.