November 2001
Intermediate to advanced
158 pages
5h 10m
English
Content preview from IBM ESS and IBM DB2 UDB Working Together
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20 IBM ESS and IBM DB2 UDB Working Together
2.2 DB2 storage concepts
The database object which maps the physical storage to the database, is the Tablespace.
Figure 2-4 illustrates how DB2 UDB is logically structured and how the tablespace maps to
the underlying physical object(s).
Figure 2-4 DB2 UDB logical structure
2.2.1 Instances
An instance is a logical database manager environment where you catalog databases and set
configuration parameters. Another way of expressing the definition of a database manager
instance is:
A logical database manager environment similar to an image of the actual database
manager environment. You can have several instances ...
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