How to define schema on the basis of other field

I am saving data from CSV using csvjson module. and my schema is as follows

name:{type:String}, // abc
email:{type:String}, //abc@mail.com
occupationType:{type:String} // company or business
companyName:{type:String}, 
companyOwner:{type:String},
businessName:{type:String},
businessType:{type:String},
businessOwner:{type:String}

In the above schema either company related will be entered or business related will be entered but both will not be entered together. Now I want to fetch those details on the basis of occupationType like below in which json shcema I want to return :

If occupationType contains company then my json schema should be like that

name:{type:String},
email:{type:String},
company:[{
    companyName:String,
    companyOwner:String
    }]

And if occupationType contains business then my json schema should be like that

name:{type:String},
email:{type:String},
business:[{         
    businessName:String,
    businessType:String,
    businessOwner:String
    }]

Plz let me know how I can achieve that.

Thanks

via Saurabh Sharma