create interface with method that return generic object with where clausule

public interface IGenericObject
{
    // add properties to object
    void Add(string name, object value);

    //return object with property name
    object Get(string name);

    // return object
    object Get();

    // return collection of property names
    IEnumerable<string> GetProperties();

    // return where sql clausule with property name = value
    string Where();
}

// return generic object with where clausule
public interface IWhere
{
    // return object that implement IGenericObject
    IGenericObject Where(string name, object value);
}