What is marshalling? Explain types of marshalling.

Marshaling is a process of transforming or serializing data from one application domain and exporting it to another application domain.

Two types of marshalling

• Marshal by value: a copy of an object is created by the server and is passed and used by the client.
• Marshal by reference: the client creates a proxy to access the object.

your question is not very clear.
do you want update many rows useing SQL?