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Archives of the TeradataForum
Message Posted: Tue, 02 Mar 2004 @ 20:17:31 GMT
| Subj: | | Re: Calculating the Efficiency Of compression |
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| From: | | Victor Sokovin |
On Tue, 2 Mar 2004 10:48:32 -0800, Rick Davis wrote:
| | What is this "table header bytes used by compressed column " , where can I get this info ? , is this same as column
length | |
| | 2) row_header_space = table_cardinality * (presence_octets -1) | |
| | how to calculate "presence octets" ? where can I get this info ? | |
These concepts are described in "Database Design", doc ID=B035-1094-083A (November 2003). You should find examples there as well.
Regards,
Victor
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