What are the architectural components of SAP HANA?
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What are the architectural components of SAP HANA?
Answer
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The SAP HANA system consists of different components which together makes its system architecture.
Index server: The Index Server is the main server in SAP HANA. It has the data storage and processing engine. Queries in different languages like SQL and MDX are received in the index server.
Then, the queries are processed by different components and servers within it. Index server also manages the transactions and authentications. It also has a component that manages transaction logs and selectively stores data.
In addition, the index server is further divided into smaller components like relational data engine, session manager, authorization management, planning engine, calc engine, and persistence layer.
Name server: Name server maintains the information of the topology or landscape of SAP HANA system environment. It contains information related to the name and location of the HANA components.
This server manages and monitors the topology of all the distributed servers or nodes. It increases the processing time by decreasing the re-indexing process as it keeps the information on what data stores in which server.
Pre-processor server: Pre-processor server is a text analyzing server which processes textual data. The service provided by this component is used during text search. Whenever a request initiates, this server processes textual data and provides it to the user.
SAP HANA Studio Repository: The repository stores information related to the newly released updates. We can update the old version to the latest ones with the help of this.
XS Engine: It facilitates communication between the external applications (Java and HTML based) and SAP HANA system via HTTP/HTTPS in a web browser. The XS Engine converts the system’s state from the persistence model stored in the database into the consumption model for clients.
