August 2009
Intermediate to advanced
893 pages
26h 48m
English
Content preview from Database Systems: Concepts, Design and Applications
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23.1. Introduction
DB2 is a trademark of International Business Machine (IBM), Inc. The first DB2 product was released in 1984 on the IBM mainframe platform. It was followed over time by versions for other platforms. IBM has continually enhanced the DB2 product in areas such as transaction processing, query processing and optimisation, parallel processing, active database support and object-oriented support, by leveraging the innovations from it Research Division. The DB2 database engine is available in four different code bases namely OS/390, VM, AS/400 and all other platforms. Common element in all these code bases is the external interfaces, especially data definition language (DDL) and SQL and basic tools such as administration. However, ...
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