which is good DCA / BCA ,MCA ?

It's always better to go for Bachelor's or undergraduation degree. But it doesn't mean that Diploma in Computer Application programme is any less. But for any job or for doing higher studies, at least an undergraduation degree is asked by the organizations. Also doing Bachelors in Computer Application, increases your job opportunities in Reputed MNCs or in software companies as this course makes a student more skilled and the subjects are taught deeply. BCA is one of the best courses opted by most of the students nowadays. BCA will help you to placed in top MNCs or IT Companies as a software developer, Technical analyst, Tech Support, Programmer and under many job roles like this. If you are wishing to go for higher studies, you can do MCA. This is the best option you can have after BCA. MCA will add an extra edge and update your skills & experience, will help you to place in good companies with handsome salary packages.