2014年11月10日
replcation and load
摘要： load: 是一次性的操作。不会在源系统中生成logging table 和 trigger.replicatin: 将启动load操作以及生成logging table(Delta replication用)。1：N ReplicationIf one source system is conne... 阅读全文
posted @ 2014-11-10 16:26 grantliu 阅读(194) 评论(0) 推荐(0) 编辑
DD02L and DD02T
摘要： LT replication server transfers in a first step all metadata table definitions from thenon-SAP source system to the HANA system into the tables DD02L ... 阅读全文
posted @ 2014-11-10 15:20 grantliu 阅读(406) 评论(0) 推荐(0) 编辑
Hana The data linage function(显示数据的来源)
摘要： The data lineage function enabled by Data Services is directly integrated into theBI workspace of the BI end-user. By right-clicking on a number, user... 阅读全文
posted @ 2014-11-10 09:18 grantliu 阅读(183) 评论(0) 推荐(0) 编辑
2014年11月7日
redo 和 undo
摘要： redo->记录所有操作，用于恢复（redo records all the database transaction used for recovery）Redo的作用是恢复已提交的事务，从而保证无论在介质失败还是实例失败时，都可以恢复用户已提交的事务，使数据库达到一致状态。Redo功能的实现依赖... 阅读全文
posted @ 2014-11-07 13:31 grantliu 阅读(183) 评论(0) 推荐(0) 编辑
2014年11月6日
HANA Index Server Architecture
摘要： At the top is the Connection and Session Management which creates and manages sessions and connections for the database clients such as SAP BusinessOb... 阅读全文
posted @ 2014-11-06 15:06 grantliu 阅读(793) 评论(0) 推荐(0) 编辑
HANA System Architecture
摘要： Index Server: holds the data and executes all operationsPreprocessor: Pre-process unstructured dataName Server: Maintains landscape infomationStatisti... 阅读全文
posted @ 2014-11-06 14:54 grantliu 阅读(174) 评论(0) 推荐(0) 编辑
how to add a system
摘要： When you start SAP HANA Studio for the first time, there will be no connection toa SAP HANA system maintained yet.It is possible to integrate several ... 阅读全文
posted @ 2014-11-06 10:46 grantliu 阅读(113) 评论(0) 推荐(0) 编辑
SAP HANA 和 BWA的比较
摘要： Technically SAP HANAis far more than BWA Standard interfaces ( SQL, HTTP, REST, MDX ) Real persistence layer ( not just flat files ) ---> redo/undo ... 阅读全文
posted @ 2014-11-06 08:47 grantliu 阅读(361) 评论(0) 推荐(0) 编辑