Using Web API for database operations

Hi,

My project architecture is like this

MVC web app -- > BAL Layer -- > WEB API 2 --> Data Layer -- > Database

and i have view model as a separate class library which is used in first three layers i.e upto web api2 layer.

My question is , for each request we are calling web api in asynchronus. is it a good way.

Please clarify me.

Thanks,

Vijay Devd