Tag Archives: SQL

Oracle Bitmap Index

Common usage of Bitmap Indexes is a data warehousing environment. This implies large amounts of data, high level of ad-hoc queries but a low level of concurrent DLM transactions. Why to use? reduced response time reduced storage requirements compared to other … Continue reading

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Cursor Loop Updates

I’m writing this topic mostly for database developer coming from the programming world. I have seen various procedural units which use the for syntax to run updates on base tables. Scenarios like the one bellow. FOR update SQL: for i … Continue reading

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