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System Architecture 2-147
Structure of a Dbspace Blob Page
For more information about the role of the blob timestamps in maintaining
the consistency of the blob data, refer topage 2-44. Figure 2-37 illustrates blob
data storage in a dbspace.
Figure 2-37
Extra information is
stored with the blob
data. This extra
information
includes a forward
pointer if the blob is
larger than a page.
More than one blob
data segment can
share a dbspace
blob page.
Page header
Blob data segment (first part)
Slot table entry
Blob timestamp and forward-pointer information
Blob data segment (trailing part)
Blob timestamp
Page header
Timestamp
Free space
Blob data segment