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XMLType is used to store and manipulate XML data. You can use XMLType to define database columns and PL/SQL variables…

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

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

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…