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Structure of pages Act-key-0 page / act-key-N page
U929-J-Z125-9-76 201
Dokuschablonen 19x24 Version 7.3us für FrameMaker V7.x vom 14.02.2007 © cognitas GmbH 2001-2007
18. Oktober 2007 Stand 11:29.50 Pfad: G:\vogt\fsc\uds\Manuale\en\udsent_e\udsent.k07
Meaning of the bytes
Byte Meaning
1-4 The act-key specifies the address of the page. Since the act-key-0 page is
always the first page in a realm, the act-key of this page always contains
page number 0.
19-20 The page length can be 2048, 4000 or 8096 bytes.
21-24 Specifies the act-key of the first FPA base page.
For a description of the layout of an FPA base page, see
section “FPA page” on page 202.
25-28 Specifies the number of pages in the realm.
33-40 These fields are only filled in the DBDIR
1
realm.
1
DBDIR is the database directory.
47-76 contains the name of the realm.
109-126 These fields are only filled in the DBDIR
1
realm.
from 1137 Contains the FPA extent table.
For a description of the layout of an FPA extent and an FPA extent page, see
section “FPA page” on page 202.
Table 15: Meanings of the bytes of the act-key-0 and act-key-N page