Jul 3, 2014

Some key points about SAP HANA Technology & Architecture

The term SAP HANA is used for both (in-memory) database and an application platform.
SAP HANA is a platform offered as both an appliance and a cloud service.

SAP HANA in-memory database is a specialized database with following features
  • All the read & write operations, take place in memory.
  • Data can be stored both in row and column format.
  • Every column is a secondary index and there is no need to maintain separate indexes.
  • It has a much better Data compression as data from the same column can be stored together
  • It utilizes distributive, multiprocessing & massive parallel processing capabilities of modern CPUs.

It comes with a tightly integrated lightweight application server out-of-the-box, SAP HANA XS or Extend ed Application Services. SAP HANA XS is esigned/engineered specificly for SAP HANA database and is closely integrated with it to take care of
  • validation logic
  • control flow logic
  • service enablement logic
as most of
  • calculation logic
  • data-intensive processing
are pushed down into the database layers to leverage the power of the features mentioned above.

HANA Extended Application Services uses
  • server-side JavaScript as the main programming language 
  • supports REST-based OData services with both JSON and Atom XML rendering
using which complex transnational business applications can be build.

Data-intensive logic can be written in
    SQL and SQL Script and

  • it also has built-in support for XML for Analysis (XMLA) and Multidimensional Expression language (MDX) access for analytics.
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