mondrian之schema,cube,dimension,measure

 schema定义了一个多维数据库。它包含一个逻辑模型，由多个cube、hierarchies、members及一个到物理模型的映射组成。
 逻辑模型包含：cubes, dimensions, hierarchies, levels, and members.

A cube is a collection of dimensions and measures in a particular subject area.

A measure is a quantity that you are interested in measuring, for example, unit sales of a product, or cost price of inventory items.

A dimension is an attribute, or set of attributes, by which you can divide measures into sub-categories. For example, you might wish to break down product sales by their color, the gender of the customer, and the store in which the product was sold; color, gender, and store are all dimensions.