# Constituent Elements

| Element                                                                                                                                                                                     | Definition                                                                                                                      |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| [CubeUsages](/install/9.3-install/multidimensional-data-modeling-in-pentaho/about-multidimensional-expression-language/mondrian-schema-element-reference/cubeusages.md)                     | Base cubes that are imported into a virtual cube                                                                                |
| [VirtualCubeDimension](/install/9.3-install/multidimensional-data-modeling-in-pentaho/about-multidimensional-expression-language/mondrian-schema-element-reference/virtualcubedimension.md) | Usage of a dimension by a virtual cube                                                                                          |
| [VirtualCubeMeasure](/install/9.3-install/multidimensional-data-modeling-in-pentaho/about-multidimensional-expression-language/mondrian-schema-element-reference/virtualcubemeasure.md)     | Usage of a measure by a virtual cube                                                                                            |
| [CalculatedMember](/install/9.3-install/multidimensional-data-modeling-in-pentaho/about-multidimensional-expression-language/mondrian-schema-element-reference/calculatedmember.md)         | Calculated members that belong to this virtual cube (Calculated members inherited from other cubes should not be in this list.) |
| [NamedSet](/install/9.3-install/multidimensional-data-modeling-in-pentaho/about-multidimensional-expression-language/mondrian-schema-element-reference/namedset.md)                         | Named sets in this cube                                                                                                         |


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