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203 articles · Page 3 of 3
dbaplus Community
dbaplus Community
Jan 27, 2016 · Databases

How to Densify Sparse Data with Oracle 10g Partitioned Outer Join

This article explains why sparse data in Oracle tables hampers continuous time‑series reporting, introduces the Partitioned Outer Join syntax introduced in Oracle 10g, and demonstrates step‑by‑step how to transform one‑dimensional and multi‑dimensional gaps into dense datasets using practical SQL examples.

Data DensificationOraclePartitioned Outer Join
0 likes · 17 min read
How to Densify Sparse Data with Oracle 10g Partitioned Outer Join
Qunar Tech Salon
Qunar Tech Salon
Aug 17, 2015 · Big Data

Comprehensive Overview of Open‑Source Big Data Tools and Platforms

This article presents a detailed, categorized catalogue of more than fifty open‑source big‑data projects—including Hadoop‑related utilities, analytics platforms, databases, BI solutions, data‑mining packages, query engines, programming languages, search tools, and in‑memory technologies—highlighting their primary functions, supported operating systems, and official links.

Data ProcessingDatabasesHadoop
0 likes · 31 min read
Comprehensive Overview of Open‑Source Big Data Tools and Platforms