IBM 000-8697 Create a Table: What Happens on Disk

2-112 IBM Informix OnLine Database Server Administrator’s Guide
Create a Table: What Happens on Disk
Figure2-22 illustrates the pointers within the disk data structures that track
and monitor the disk space allocated to a table.
Figure2-22
A table can be
located in a
dbspace that is
different than the
dbspace that
contains the
database. The
tblspaceitself is the
sum of allocated
extents, not a
single, contiguous
allocation of space.
OnLine tracks
tblspaces
independently of
the database.
Tblspace
Tblspace
Tblspace
Tblspace tblspace
Initial extent
Initial extent
Dbspace
Initial extent
Next extent
Initial extent
Tblspace
Dbspace