Metamodel a model for creating a compatible SQL database domain. A meta model is a model that contains classes that represent a database (schema, table, column, relationship) and run the Database (query) interactive structure in the same way as sql/linq. In short, it is a http://www.aliyun.com/zixun/aggregation/14208.html "> data model in the database and other data stores." The meta model can query the database for different data stores, CSV files, Excel spreadsheets, MS access files, and XML files using the same method and domain model.
Metamodel 2.2.2 This version of the MongoDB module now supports a list of maps and column types. The query filter now supports logical and existing or operators. Now the Datacontext.getcolumnbyqualifiedlabel (...) method is fault tolerant for case differences. The dataset is automatically closed when it is garbage collected. A stack overflow error datacontextfactory.createexceldatacontext (...) Method has been repaired.
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