What is delta caching in SAP BW-BEX - Business Explorer?

SAP Term: delta caching

• Component: BW-BEX

• Component Name: Business Explorer

• Description: Process for optimizing cache performance whereby only changed data has to be added to the cache. InfoCubes are particularly suitable for use with delta caching since the system can recognize new entries from the request ID.

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• Key Concepts: 
  Delta Caching is a feature of the BW-BEX Business Explorer component of SAP. It is used to reduce the amount of data that needs to be retrieved from the database when a query is executed. Instead of retrieving all the data from the database, only the data that has changed since the last query execution is retrieved. This helps to improve query performance and reduce network traffic.
  
  How to use it: 
  Delta Caching can be enabled in BW-BEX Business Explorer by selecting the “Enable Delta Caching” option in the query properties. Once enabled, only the data that has changed since the last query execution will be retrieved from the database. This helps to improve query performance and reduce network traffic.
  
  Tips & Tricks: 
  When using Delta Caching, it is important to ensure that all queries are executed with the same parameters. If different parameters are used for different queries, then Delta Caching will not be effective as it will not be able to identify which data has changed since the last query execution.
  
  Related Information: 
  Delta Caching is similar to other caching techniques such as materialized views and snapshot replication. These techniques can also be used to improve query performance and reduce network traffic.