hash file

mahipalreddy0007 · Post by **mahipalreddy0007** » Wed May 04, 2011 7:27 am

what is static hash file and dynamic hash file?what are difference between this two?

chulett · Post by **chulett** » Wed May 04, 2011 7:29 am

what is the right forum to post this question in?

MarkB · Post by **MarkB** » Wed May 04, 2011 7:46 am

chulett wrote:what is the right forum to post this question in?

Interview questions????

ray.wurlod · Post by **ray.wurlod** » Wed May 04, 2011 3:26 pm

A hash file is a tool for shaping a block of hash. In DataStage we talk (or should talk) about hashed files.

The names are fairly self-explanatory. A static hashed file is one in which the number of groups does not change without manual intervention. In a dynamic hashed file the number of groups is adjusted automatically depending on the volume of data needing to be stored. From this simple differences other differences, such as physical strucure, obtain but the logical structure and hashing algorithm approach to key-based access is identical.

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ketfos · Post by **ketfos** » Wed May 04, 2011 5:00 pm

Here is the link explaining the hash files

http://publib.boulder.ibm.com/infocente ... Files.html

This is from IBM InfoSphere DataStage and InfoSphere QualityStage, Version 8.5 manual