Figure 20-3 shows the high-level overview of the Spring Batch infrastructure components extracted
from Spring Batch's reference documentation.
Figure 20-3. Spring Batch infrastructure components
Spring Batch Metadata
Spring Batch maintains all job execution information in its own metadata. Most likely, the metadata will
be maintained in the same database as the enterprise application, although you can choose to have in-
memory metadata (however, by using this, you lose the major benefits of Spring Batch, such as
restarting a failed job, and so on). Spring Batch provides DDL scripts for creating the metadata structure
in most commonly used RDBMSs. Figure 20-4 shows the data model of Spring Batch in an Oracle 11g
database.
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