Structure of pages Page container
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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\ud s\Manuale\en\udsent_e\uds ent.k07
7.1 Page container
Figure 46: Structure of the page container for pages with a length of 4000 or 8096 bytes
Meaning of the bytes
Headers and trailers are used by UDS/SQL for administration purposes. Consistent pages
have a matching version number in their header and trailer.
Byte Meaning
1-64 Header; bytes 17-24 contain a version number.
65-4064
or
65-8160
Page with a length of 4000 or 8096 bytes
4065-4096
or
8161-8192
Tra il e r ;
bytes 4089-4096 (for 4000-byte pages) and bytes 8185-8192 (for 8096-byte
pages) contain a version number.
Table 14:Meanings of the bytes in a page container
Header
Page
Trailer
1
65
4064/8160
4096/8192
64 bytes
4000 bytes
or
8096 bytes
4096 bytes
or
8192 bytes
32 bytes