What is the diff between replication and streams

Hello,
Can some one tell me the difference between replication and Oracle streams, When I look into the documentation, it says to use the Oracle EM Console to setup the Replication.But I am not sure how do I download the Oracle EM Console.
Thanks for all who replies for this.

Replication is a Neolithic, perhaps Paleolithic, technology that slightly improved replication over what we did back in the days when we lived in caves and spoke only using grunts and hand motions.
Replication is hard to set up, hard to maintain, and essentially guaranteed to give you full-time employment and loss of hair due to gaps created by transactions that do not replicate correctly and network issues.
Streams is far from perfect but is vastly superior in terms of flexibility, gap resolution, and performance.
When looking at Streams also look at Change Data Capture (CDC). If CDC will do the job don't do Streams directly. Use the simplified API.

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http://help.sap.com/saphelp_nw70/helpdata/en/f8/7913426e48db2ce10000000a1550b0/frameset.htm
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