Shoumadip Das, Author at Shoumadip Das

Author: Shoumadip Das

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

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

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

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

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

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

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

The SYS_CONTEXT function is used in both SQL & PL/SQL to return information about the Oracle environment that you’re working…

INSTEAD OF triggers are essentially alternatives to DML triggers. They fire when inserts, updates, and deletes are about to occur;…

External tables are read-only tables that allow Oracle to query data that is stored outside the database in flat files….