Is Demat account and DP Account the same or are they different?

My DP insists on nomination facility in my demat account. Is that compulsory?

Do I have to have a demat account with a lender to get a loan against securities/shares (LAS) with the same lender?

What are the different types of bank accounts in India?

Are there different types of saving accounts?

What are the criteria before opening trading and demat account?

How are non-resident external (NRE) and non-resident ordinary (NRO) accounts different from one another?

What are the new charges for debt securities in basic services demat accounts?

Is the compliance for Demat account and brokerage account same?

Is closing the demat account same as freezing the demat account? Which is a better choice for an investor?

How are corporate actions treated in a demat account?