The query service enables us to retrieve data from Microsoft Dynamics AX without having to use the .NET Business Connector or, even worse, access the SQL database directly.
By using the query service, you can fetch data using any of the following query types:
QueryMetadataclass. By doing this, you can create a query in the same way you create queries in X++ code.
AifQueryBuilderclass. You can invoke the
ExecuteQueryoperation by passing in the name of ...