Earlier today we told you about how the Hadoop business is heating up. Hadoop isn't a database, but Hbase and its alternatives are a core part of the platform. IBM is offering Hadoop products, and EMC is making an announcement next month. Microsoft has its own alternative, Azure Table Storage.

Meanwhile, the columnar database market has been rapidly converging. in the past year, EMC acquired Greenplum; IBM acquired Netezza; SAP acquired Sybase; HP acquired Vertica; and Teradata acquired AsterData.

At an analyst event last month HP CEO Leo Apotheker said "Traditional relational databases are becoming less and less relevant to the future stack." Major vendors are taking notice of next-generation databases, and we won't be surprised to see acquisitions from Oracle and others soon. Which NoSQL company wil be acquired first?


Disclosure: IBM and HP are ReadWriteWeb sponsors.