A data warehouse and analytic appliance suite that IBM purchased around 2010. Utilizes SQL language to query data. It is a contender in the "big data" market and used comparable to Teradata or Hadoop. Pronounced Ne-Tease-Ah.
IBM purchased Netezza around 2010 and it the technology now powers their PureData System appliance products. It is a suite of products in the "big data" market, similar to Teradata or Microsoft's Hadoop.
It is unique itself that it utilizes a 2 tier architecture instead of a node based like Teradata and Hadoop commonly use. The scale-ability is obtained by Netezza's Asymmetric Massively Parallel Architecture (AMPP).
Quote from documentation:
SQL-92 (also called SQL/2), is the operative ANSI/ISO standard for relational databases today. While no vendor supports the complete SQL-92 standard, Netezza SQL conforms to all the commonly supported components of SQL-92. In addition, Netezza includes some SQL:1999 extensions and some SQL:2003 extensions. This publication describes the Netezza SQL language support.
If you have direct access to the Netezza appliance from a command shell, or if you have UNIX clients with the Netezza CLI tools, you can run SQL commands by using the nzsql command-line interpreter. You can also run Netezza SQL commands by using common SQL tools and applications that support ODBC, JDBC, and OLE DB data connectivity APIs.