Re: Semi-Optimistic

[pytel@xxxxxxxxxx]

Exactly !!

You can create and use EVI index only by SQL commands, because SQL can
benefit from this.
Underlying file can be SQL table or DDS-created PF.

Best regards
    Alexey Pytel



"Roger Pence" <rp@rogerpence.com> on 02/19/99 02:24:48 PM

Please respond to MIDRANGE-L@midrange.com

To:   MIDRANGE-L@midrange.com
cc:    (bcc: Alexei Pytel/Rochester/IBM)
Subject:  Re: Semi-Optimistic







>New type of indices imrove search, but cannot be used for ordering
records,
>particularly for reading the file in a key order (this is in a nature of
>these indices).
>They will really improve SQL queries, because SQL operates over SETS of
>records.
>They cannot possibly do much about CHAIN-READE cycle.
>
>Best regards
>    Alexey Pytel


Hmmm, so the distinction isn't for what's used to create a table (between
OS/400 "native" commands and SQL) but rather what mechanism (record level
access out of a HLL versus SQL) is used to access the table. Thus, (it is
assumed) VEI works best for SQL-imposed access, right?

rp



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