Technical Blog

         Whenever a SQL statement is executed, Oracle automatically allocates a memory area (known as context area) in Oracle database PGA ...

Varrays hold a fixed number of elements, although the number of elements can be changed at runtime. Like nested tables, varrays use seque...

Nested tables          Nested tables hold an arbitrary number of elements and use sequential numbers as the index or key to the eleme...

Collections     A collection is an ordered group of elements ,of the same type.Collection have only one dimension,we can nodel multi-dim...

          What is necessary for top-tier Web sites, according to proponents of NoSQL, is massive scalability, low latency, the ability to ...