DATA RETRIEVAL ACROSS MULTIPLE MODELS

摘要

Model queries that identify and direct to retrieve from one or more logical data models. A model query engine interprets the model queries, and interacts accordingly with the identified logical data model(s) specified in the respective model query. The interaction may be in the form of respective logical data model queries to the respective logical data models, and results are returned in the modelling notation of that respective logical data model. The model query engine may then use the results to interact with a physical data model, after potentially translating the modelling notation into a common notation used by a physical data model. The interaction with the physical data model may be in the form of a physical data model query, with the results therefrom being assembled into a result set. Accordingly, queriers may formulate queries by referencing models, without having to understand the schema of the data source.