Oracle Database 11 g - Online Public Access Catalog

CHAPTER 12 ■ DATA WAREHOUSING 561SQL> rollback;Rollback complete.Partition pruning processes are not applicable to system partitions. Please be aware thatwhen you perform updates and deletes without the partition-aware syntax, Oracle scans everypartition on the table. For simplicity, you can perform updates and deletes without the partition-awaresyntax, as shown here:SQL> delete from docs_system_parted2* where doc_id=10001SQL> /1 row deleted.SQL> delete from docs_system_parted;1 row deleted.Enhanced Partition Pruning CapabilitiesHere’s another feature that you get out of the box. Starting in Oracle Database 11g, partitionpruning uses the bloom filtering and is automatically active for all joins with a partitionedobject. In the previous release, the subquery pruning method was triggered on the cost-baseddecision model. The subquery pruning consumed internal recursive resources. The new bloomfiltering is activated all the time without consuming additional resources.Oracle MultimediaOracle interMedia is now called Oracle Multimedia. Oracle Database 11g continues to developadvancements to Oracle Multimedia. In today’s increasing demand for higher-fidelity digitalization,Oracle bridges the technology with the database and supports the requirements insecurity, media, and entertainment, medical, and life sciences. With the lower cost in storageand higher technological advancement, customers are storing more and larger digital images,audio, and video in the database. Now, the information technology is entering an era wheresingle media files can be tens of gigabytes in size. Oracle welcomes this challenge by providingrich features in Oracle Multimedia. Prior to the Oracle Database 11g release, the ORDIMAGE,ORDAUDIO, ORDVIDEO, and ORDDOC datatypes were bound to the 4GB size restriction. Asof Oracle Multimedia, these datatypes can hold objects from 8TB to 128 TB depending on thedatabase block size.Enhanced DICOM SupportOracle Multimedia continues to enhance functionality for Digital Imaging and Communicationsin Medicine (DICOM), which is a medical imaging standard initiated by the AmericanCollege of Radiology (ACR) and the National Electrical Manufacturers Association (NEMA) toenhance the connectivity of radiological devices. In 1993, the ACR-NEMA standard was revised