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alternate index for cluster

 
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lavanya

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Joined: 08 Jul 2005
Posts: 8

PostPosted: Mon Jul 18, 2005 10:20 am    Post subject: alternate index for cluster
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hi,
what is the exact use of alternate index in the cluster creation.


thanks,
lavanya
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rssomm

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Joined: 05 Jun 2005
Posts: 41
Location: Hyderabad

PostPosted: Mon Jul 18, 2005 1:25 pm    Post subject: Re: alternate index for cluster
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Alternet Index provides another way of random accessing to a VSAM dataset.
Suppose a KSDS has primary key Employee ID. We can access any record in this KSDS if we know the Employee Id.

You can build alternate index on another field in this KSDS record say on Employee Name. If you know employee name now, You can access any record in the KSDS.

Alternate Index need not be Unique and can be built both on KSDS and ESDS.

Regards
Madhu
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