IBM Data Server DB2 - Manual (Page 17)

Chapter 1. Introduction to DB2 deployment 3
1.2 DB2 9.5 for UNIX, Linux, and Windows products
One of the first things to consider during deployment planning is to choose the
right DB2 product for your enterprise.
The DB2 product is available on Windows 2000/2003/XP/Vista, Linux, AIX®,
Hewlett-Packard’s HP-UX, Sun™ Microsystems’ Solaris™, OS/400®, i5/OS®,
VSE/VM, and z/OS®. The SQL API is common to all platforms for DB2 products,
allowing data to be accessed freely across various platforms. The DB2 9.5 with a
pureXML™ and relational hybrid is no longer just a traditional database but is a
complete data server.
For the scope of this book, we introduce only the DB2 product family available for
UNIX, Linux, and Windows platforms. Even within this limited scope, there are
over fifteen DB2 9.5 products.
1.2.1 DB2 Server products
DB2 provides different editions for satisfying various enterprise requirements.
These products are full relational databases that accept remote connections.
Note that not all products are available on all platforms.
DB2 Express-C and DB2 Express-C FTL Edition
Designed for use with a small number of clients, it is ideal for small and medium
businesses. DB2 Express-C is a full functional database without certain features,
such as Query Patroller, Geodetic Performance Expert, Connection
Concentrator, Governor, Workload Management, Compression Backup, and
Table Partitioning.
DB2 Express-C is optimized for two processing cores and 2 GB of memory.
If your hardware has a higher configuration than the optimized setting, DB2
Express-C will throttle down its resource usage to optimized level (maximum
memory usage limit of 2 GB).
The difference between freely distributed DB2 Express-C and DB2 Express-C
FTL (Fix Term license) is that DB2 Express-C FTL includes 12 months license
and subscription (includes support).
DB2 Express Edition
This edition is similar to DB2 Express-C, but the High Availability Feature,
Homogeneous Federation Feature for Express, and pureXML Feature for
Express can be purchased on top of the base product. Resource consumption
limit measured in Processor Value Unit (PVU) is raised to 200 and memory limit
of 4 GB. This product is available on Linux, Windows, and Solaris (x64 as of fp1).