User Guide

SAP AG November 2002
Database Instance Type
The SAP DB database system supports different application areas. The SAP DB database
instance [Page 132] has different characteristics depending on the application area. The
following database instance types exist:
• SAP DB OLTP [Page
149]
• liveCache [Page
140]
• SAP DB Document Server [Page
147]
• SAP DB OLAP [Page
149]
• SAP DB E-Catalog [Page
148]
See also:
SAP DB Versions and Database Instance Types [Page
24]
SAP DB OLTP
SAP DB OLTP is a database instance type [Page 132] of the SAP DB database system. SAP
DB is a relational database system that was developed for OLTP (Online Transaction
Processing). The database system is optimized to process individual transactions fast in
environments with a high number of users and large databases.
liveCache
liveCache is a database instance type [Page 132] of the SAP DB database system.
In Supply Chain Management, large volumes of data must be permanently available and
changeable. For this reason, an addition has been made to the SAP DB OLTP [Page
149]
relational database system to enable actual data structures and data flows (such as networks
and relationships) to be mapped more easily and effectively. The product is called liveCache.
The liveCache is object-oriented, and in contrast to SAP DB OLTP, stores its data in the main
memory of the database system.
SAP DB Document Server
SAP DB Document Server is a database instance type [Page 132] of the SAP DB database
system.
In today’s information landscape, a large amount of data must be processed that does not
have the typical format of a relational database, but is “unstructured” (such as videos, XML
documents). SAP DB Document Server was developed on the basis of the SAP DB OLTP
[Page 149] relational database system to ensure that as much of this unstructured data as
possible can be processed outside the OLTP database. This improves the performance of the
SAP DB OLTP database.
One application example is the SAP Content Server.
User Manual: SAP DB 23