Company - DW Product | Oracle - Exadata |
Company | Oracle has three businesses: database,
applications, and consulting. Its database business is the largest by far and currently represents 80 percent of Oracle’s new license revenues. |
Product URL | https://www.oracle.com/database/data-warehouse/index.html |
STRENGTHS | - Intelligent
Storage Grid - Hybrid Columnar Compression - Smart Flash Cache |
WEAKNESSES | |
Deployment Platforms | IBM AIX
Hewlett-Packard HP-UX Linux Microsoft Windows Sun Solaris |
Server Architecture | Single server platform
Distributed database Real Application Cluster (RAC) • Shared, partitioned data • Multiple server platforms • Server interconnect • Any number of readers and writers |
Data Type Support | Oracle built-in data types (SQL
types): • Numeric • Binary • Character • Date time Large objects (max 2 gigabytes) User-defined types (object-oriented types, object identifier types, arrays, nested tables) Oracle-supplied types • Spatial • Media • Text • XML |
Physical Design
Recommendation | Neutral on the physical design
of data warehouses. |
Physical Implementation | Manual
Template-based via templates and Database Configuration Assistant (DBCA) tool Automated via Oracle managed files |
Custom Transformations | May be written in:
SQL PL/SQL |
Summary Table Support | Materialized views automate the
creation and management of summary tables. A materialized view stores the results of a query in a table |
SQL Extensions | CUBE and ROLLUP in SELECT
Functions • Ranking • Window aggregate • Reporting aggregate • Lag/lead • Linear regression • Inverse percentile • Hypothetical rank and distribution • First/last • Numeric • Date time User-defined |
OLAP | Oracle OLAP is a separatelypackaged
and -priced product that provides OLAP functionality |
Data Mining | Oracle Data Mining is a separately-
priced and -packaged product. |
This blog is useful for Database, Business Intelligence, Bigdata and Data Science professionals.
January 13, 2016
Oracle Data Warehouse - Exadata
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