• Article Type: General
• Product: Aleph

Description:
Could you tell me how tables z98 and z980 work? What information gets in these tables during indexing of a document? And how do these tables work during execution of Find request?

Resolution:
Z98
This table contains word document relations. Z98 contains a bitmap-compressed map of word occurrences in documents. The bitmap maintains pointers from the words registered in Z97 to the documents. The WORD3 utility (UTIL-F-4-word3) assists in reading the bitmap. This utility reads the bitmap in order to find the documents that contain word X stored in index Y.

Z980
Because z98 is a very big table, whenever there are updates in z98 - they are registered in z980 instead of z98.

Once in a while, the updates from z980 are transferred to z98 (as part of ue_01 processing).

(Keywords: z98 z980 word3 z97 faq)

• Article last edited: 10/8/2013