What is the apex cuboid?

The 0-dimensional cuboid holding the grand total over all dimensions

A cuboid with only one dimension

Where do the apex and base cuboids sit in the lattice?

Apex at the top (most summarised), base at the bottom (most detailed)

Apex at the bottom, base at the top

Year not given

Define apex cuboid

Short answer

The apex cuboid is the highest-level 0-dimensional cuboid that aggregates over all dimensions, storing a single grand total value (usually "all"). Example: in a sales cube with time, item, location, the apex cuboid holds total sales across all time, all items, and all locations.

Define apex cuboid.

The apex cuboid is the highest-level, 0-dimensional cuboid of a data cube lattice. It aggregates over all dimensions and holds a single value: the grand total of the measure, usually written "all".

Example: in the sales cube (time, item, location), the apex cuboid stores one cell, the total sales over all time, all items and all locations. It is the top of the lattice, while the 3-D cuboid is the base cuboid.

✓ Answer checked by Claude Opus 5.5 (high effort)

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