Extracting the data

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After the maps of the DBD and PSB are extracted, you can use the Data Mapping Facility to navigate through the data.

Because IMS does not maintain a catalog that describes client information for each segment, Data Virtualization Manager server maintains the information in the Data Mapping Facility. An IMS database segment map definition is created based on the SQL statement processing requirements.

Figure 1. Using the Data Mapping Facility with the IBM Data Virtualization Manager for z/OS Interface for IMB DB/SQL


This figure shows a SQL statement used to extract data from table PARTROOT and the result set, which includes the IMSDB Segment Layout.