Design a minimalist SVG logo for "BGCMDB" — a database configuration management platform. The logo consists of two parts: 1) An abstract icon that visually conveys "data management" — use geometric shapes like layered/stacked rectangles representing structured data records, with decreasing size to suggest hierarchy, order, and organization. The bars should have a subtle gradient fade (solid to semi-transparent) to add depth. 2) The wordmark "BGCMDB" rendered as bold italic (slant ~6-8°) letterforms, drawn with SVG paths (not font text). Each letter should be thick, compact, and clearly legible with consistent stroke weight. Both icon and wordmark share the same vertical height (18px optical bounding box) so they are perfectly aligned. Icon sits left, wordmark right, separated by ~20px gap. All elements in white (#FFFFFF) on dark background. Output: single self-contained SVG with viewBox, no external fonts.