Data Warehouse
The concept of data warehousing dates back to the late 1980s when IBM researchers Barry Devlin and Paul Murphy developed the ``business data warehouse``. In essence, the data warehousing concept was intended to provide an architectural model for the flow of data from operational systems to decision support environments. The concept attempted to address the various problems associated with this flow, mainly the high costs associated with it. In the absence of a data warehousing architecture,
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``Data warehouse appliance` is a term coined by Foster Hinshaw,the founder of Netezza. In creating the first data warehouse appliance, Hinshaw and Netezza used the foundations developed by Model 204, Teradata, and others, to pioneer a new category to address consumer analytics efficiently by providing a modular, scalable, easy-to-manage database system that’s cost effective.
MPP database architectures have a long pedigree. Some consider Teradata's initial product as the first DW appliance or Britton-Lee's.Teradata acquired Britton Lee renamed ShareBase — in June, 1990.Others disagree, considering appliances as a ``disruptive technology`` for Teradata.
Additional vendors, including Tandem Computers, and Sequent Computer Systems also offered MPP architectures in the 1980s. Open source and commodity computingcomponents aided a re-emergence of MPP data warehouse appliances. Advances in technology reduced costs and improved performance in storage devices, multi-core CPUs and networking components. Open-source RDBMS products, such as Ingres and PostgreSQL, reduce software-license costs and allow DW-appliance vendors to focus on optimization rather than providing basic database functionality. Open-source Linux became a common operating system for DW appliances.
Other DW appliance vendors use specialized hardware and advanced software, instead of MPP architectures. Netezza announced a data appliance`` in 2003, and used specialized field-programmable gate array hardware. Kickfire followed in 2008 with what they called a dataflow `sql chip`
In 2009 more DW appliances emerged. IBM integrated its InfoSphere warehouse (formerly DB2 Warehouse) with its own servers and storage to create the IBM InfoSphere Balanced Warehouse. Netezza introduced its TwinFin platform based on commodity IBM hardware. Other DW appliance vendors have also partnered with major hardware vendors. DATAllegro, prior to acquisition by Microsoft, partnered with EMC Corporation and Dell and implemented open-source Ingres on Linux. Greenplum had a partnership with Sun Microsystems and implements Greenplum Database (based on PostgreSQL) on Solaris using the ZFS file system. HP Neoview uses HP NonStop SQL.
The market has also seen the emergence of data-warehouse bundles where vendors combine their hardware and database software together as a data warehouse platform. The Oracle Optimized Warehouse Initiative combines the Oracle Database with hardware from various computer manufacturers (Dell, EMC, HP, IBM, SGI and Sun Microsystems). Oracle's Optimized Warehouses offer pre-validated configurations and the database software comes pre-installed. In September 2008 Oracle began offering a more classic appliance offering, the HP Oracle Database Machine, a jointly developed and co-branded platform that Oracle sold and supported and HP built in configurations specifically for Oracle. In September 2009, Oracle released a second-generation Exadata system, based on their acquired Sun Microsystems hardware.
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