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This is the first in a series of blog posts in which I will explore various aspects of On-Line Transaction Processing (OLTP).  In this post, I'll examine main memory storage as an alternative to disk for traditional and âNew OLTPâ systems. Traditional relational DBMSs, Hadoop and most of the NoSQL offerings store their data on disk. In contrast, VoltDB is a main memory DBMS. First, it should be
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