  We generalize the BRST transformations in Abelian rank-2 tensor field theory
by allowing the parameter to be finite and field dependent and show that such
transformations play crucial role in studying the Abelian 2-form gauge theory
in noncovariant gauges. The generating functionals in different effective
theories are connected through these generalized BRST transformations with
different choice of finite parameter. We further consider the generalization of
the anti-BRST transformations and show that even anti-BRST transformations with
the finite field dependent parameter relate the generating functional for
different effective theories. Such generalized BRST/anti-BRST transformations
are useful in connecting generating functionals corresponding to different
effective theories. Field/antifield formulation of this Abelian 2-form gauge
theory is also studied in the context of generalized BRST transormations. We
show that generalized BRST transformation connects the generating functional
corresponding to the different solutions of quantum master equation in
field/antifield formulation.
