System Generated Schemas in SAP HANA
A schema is just like a database folder.The relavant tabels are going to group together according to the particular schema definition.
There are 3 types of schemas.
- 1. User Defined Schema
- 2. System Defined Schema
- 3. SLT Derived Schema
User Defined Schema is created by user (DBA or System Administrator)
System Defined Schema Where all the list of tables views going to be associated.
There are 5
- a. _SYS_BI
- b. _SYS_BIC
- c. _SYS_REPO
- d. _SYS_STATISTICS
- e. _SYS_XS-ENGINE
SLT Derived Schema :When we configure the SLT first time(by administrator) they are going to give schema name–>meaning a configure name and that configure name that is provided or configure out side the HANA in the source system or in the SLT replication server.That particular name is container of list of the tables that need to be pulled from the source system.
SYS_BI: This schema stores all the metadata of created column Views.
_SYS_BIC: Whenever we activate HANA Models, its going to be stored hear in _SYS_BIC System standard schema
_SYS_REPO: Whatever the objects are there in the system is available in repository
_SYS_STATISTICS: All the system configurations and parameters.
_SYS_XS: XS stands for XML Server engine. All the 3rd party Web Services can Connect & Communicate.
Venkat Naveen Kumar.