Some dimensions are aggregates of their members. For example, 24 hours make a day, 7 days compose a week, 52 weeks make a year, and so on. In these cases, the Time dimension represents the sum of its components. However, some dimensional hierarchies are not the sums of their components. For example, the Measures dimension commonly comprises business measures such as Sales, Profit, and Cost of Goods Sold. When the dimension label cannot represent the sum of contents, a protocol replaces the dimension label with a member set. Essbase uses the first child in the dimension outline as the implied share instead of non-aggregate dimension labels.