Author: Shoumadip Das

reference_partition

Understanding REFERENCE PARTITION In Oracle Database.

Reference partitioning is a partitioning method introduced in Oracle 11g. Using reference partitioning, a child table can inherit the partitioning…

reference_partition

Understanding RANGE PARTITION In Oracle Database.

Use RANGE PARTITION when you want to access data on a frequent basis in a large table based on some…

reference_partition

Understanding LIST PARTITION In Oracle Database.

Use list partition when you already have a predefined set of values for which you are expecting the data.You should…

reference_partition

Understanding Package Level Caching In Oracle Database.

A package-based cache consists of one or more variables declared at the package level,rather than in any subprogram of the…

reference_partition

Understanding Function Based Index In Oracle Database

Traditionally, performing a function on an indexed column in the where clause of a query guaranteed an index would not…

reference_partition

Understanding Reverse Key Index In Oracle Database

Reverse B-TREE key indexes reverses the bytes of the key value in the index to reduce Index block contention. Index…

reference_partition

Understanding Bitmap Index in Oracle database

BITMAP index are different from B-TREE index in the manner they store data. • B-TREE index stores data in tree…

reference_partition

Index Spawning Vs Index Splitting In B-Tree Index

The phenomenon of vertical tree growth or height increase is known as “Index Spawning”. Happens in Auto-incremental scenario. The phenomenon…

reference_partition

Understanding Materialized View ON PREBUILT TABLE

The “ON PREBUILT TABLE” clause is used when you have already created a replicated table using “CTAS” and now want…

reference_partition

Understanding DML Statements on a SQL Join View

A join view is a view based on a join. Special considerations apply when you issue a DML(INSERT, UPDATE, or…