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Netezza is a data warehouse and big data analytics appliance. It uses Asymmetric Massively Parallel Processing (AMPP) architecture, which combines… Continue reading Netezza TwinFin Architecture
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Netezza Generate Statistics
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Netezza uses the cost based optimizer to determine best methods determine redistribution, scan, join, join orders. Netezza query optimizer relies on the statistics from… Continue reading Netezza Generate Statistics
Connect Netezza to Python using JDBC Driver
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Connect to Netezza by using various methods and programming languages. Netezza supports ODBC, OLEDB and JDBC drivers for connections. Before… Continue reading Connect Netezza to Python using JDBC Driver
Netezza Sequence – Creation and retrieval
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A Netezza sequence can provide unique values when the getnext value method. You can use the sequence to generate unique… Continue reading Netezza Sequence – Creation and retrieval
Materialized Views in Netezza
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Materialized View is a sorted projection of one and only one table MVs reduce the width of the data being… Continue reading Materialized Views in Netezza
Netezza Failover Architecture
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As an appliance Netezza includes necessary failover components to function seamlessly in the event of any hardware issues so that… Continue reading Netezza Failover Architecture
Netezza Transactions BEGIN, COMMIT, ROLLBACK
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Netezza transactions can be summarized using the following : Transactions start with BEGIN WORK. Transactions are validated with COMMIT WORK.… Continue reading Netezza Transactions BEGIN, COMMIT, ROLLBACK