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MDX (Multidimensional Expressions) is a language used for creating multidimensional data models, which can be utilized in OLAP (Online Analytical Processing) systems. It supports multidimensional arrays and provides a set of functions and operators specifically designed for analyzing data. MDX offers rich data analysis capabilities such as aggregating, grouping, and sorting data. The Xpert analytics cloudโ€™s MDX model executes language models on an MDX engine for parsing and execution. The multidimensional modeling functionality primarily focuses on general modeling. This chapter introduces features related to MDX modeling.