How to Reindex SQL Tables. The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can ...

* we can create index key for multiple columns of an database table. * Actually when we create an index on database column of table oracle internally scattered the data into "balanced tree". * we can ...

We present our experiences with R-tree indexes in Oracle. We examine two approaches for incorporating updates in spatial R-tree indexes: the first at update time, and the second at commit time.

Organizations seeking to better secure their Oracle database deployments would do well to look more closely at their Oracle index infrastructure, which is open to a number of attacks on both ...