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How index component in KSDS points to data component

 
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prasad_yadav20

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Joined: 12 Mar 2005
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Location: hyderabad

PostPosted: Mon Apr 04, 2005 6:52 pm    Post subject: How index component in KSDS points to data component
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hi pals,
how index component in ksds points to data component ?is there any poiters, i know key information is availale in index component , i want other reson...
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die7nadal

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Joined: 23 Mar 2005
Posts: 156

PostPosted: Tue Apr 05, 2005 11:11 am    Post subject: Re: How index component in KSDS points to data component
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prasad_yadav20 wrote:
hi pals,
how index component in ksds points to data component ?is there any poiters, i know key information is availale in index component , i want other reson...


The Index component has the CIs arranged in the TREE format, each CI will have the high Key information for the CIs in the next lower level and the RBA. VSAM Index contains pointers to the next lower level. The Index may have many levels.

Now if you try to access a record using a key, it will try to find a match to the high key present in the CI and will traverse further down in each level to finally arrive at the exact Key and its RBA.

I hope this makes sense to u, if you need to further explore this please refer www.redbooks.ibm.com for the VSAM DEMYSTIFIED Redbook.
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