Various embodiments of systems and methods for performing backup operation in In-memory database systems are described herein. The device includes a rotatable grinding shaft, a grinding wheel, a grinding wheel guide assembly, a guide finger, and a first non-sliding stabilizer. Although the apparatus covers a large area within the catch basin, the overflow wall, overflow area, and clearance between the filter sheet and the floor provide sufficient space for fluid and excess trash to pass in the event the capacity of the apparatus for holding them is exceeded. The detachable layer is coupled to the inner face of the frame. The encoding operation may generate a transform size syntax element to indicate the transform size that may be used in reconstructing the encoded macroblock. The supporting assembly includes at least one sliding lever and a supporting member secured to the at least one sliding lever.