What is a root page?

The opposite of a leaf page; it is the highest level index page. An index can contain only the one root page; all other index pages are associated to the root.
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Sandhya.Kishan

  • Jul 9th, 2012
 

The indexes of DB2 are represented using b-tree,the b-trees top page is called as the root page.The root page entries represent the upper range limits of the index and are referenced first in a search.

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