However, the cloud changes everything. The requirement to process huge amounts of data in the cloud is leading to new approaches to database processing, based on older models. MapReduce, the fundamental way Hadoop processes data, is based on the older "share-nothing" database processing model for years ago, but now we have the processing power, the disk space, and the bandwidth.
I suspect that the movement to cloud computing will indeed reduce the use of relational databases. It's nothing we haven't heard of before, but this time we have a true need.
This article, "SQL and relational databases: They're not right for the cloud," was originally published at InfoWorld.com. Read more of David Linthicum's Cloud Computing blog and follow the latest developments in cloud computing at InfoWorld.com.