Transcripts are required to apply for permanent residency, higher education, visa, H1B, immigration etc. If you are applying for WES evaluation (ECA) for job, education or Canada PR, you need to apply for transcripts from your university, unless your college is Autonomous.
Provisional Degree certificate is a temporary degree certificate provided to you by your university (Visvesvaraya Technological University).
PDC tells you that you are eligible to receive Convocation Degree certificate.
A Consolidated Marks Card (CMC) of all the Semesters combined is a single marks card that contains marks of all the semesters, i.e from 1st Sem to 8th Sem. Consolidated Marks Card of All the Semesters is not mandatory to have. This type of marks card is only for your convenience.
Consolidated Marks Card of a Semester is a marks card of a particular semester. It contains marks of all the passed subjects in one marks card. See images below for an example
If you have lost your original marks card or Degree certificate due to fire or any other means, You have to follow the below procedure to get the duplicate certificate.
VTU Degree Certificate or Convocation degree certificate is a certificate that certifies you that you have completed the Engineering, passing all the subjects, successfully.