DWH architecture?
Answers were Sorted based on User's Feedback
THE ARCHITECTURE CONTAINS THE FOLLOWING COMPONENTS
1.OLTP SYSTEMS
2.STAGING LAYER
3 DATA WAREHOUSE
4.DATA MARTS
5.REPORTS
6.BUSINESS USERS
| Is This Answer Correct ? | 11 Yes | 3 No |
it is composed of dataware house
layer,datastagelayer,process management layer,meta data
layer,application layer and other etc
| Is This Answer Correct ? | 4 Yes | 2 No |
Answer / rb
From Data perspective these 4 layers can be seen in DWH
architecture :
Staging
Atomic or Base layer,
Aggregate layer,
Presentation layer
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / kammari.krishnaiah
1.Source
2.Staging Area
3.Data Warehouse
4.Data mart
| Is This Answer Correct ? | 1 Yes | 0 No |
OLTP SYSTEMES CONTAINS
1.FLAT FILES
2.DBASE
3.ORACLE
4.SAP
WE WILL EXTRACT THE DATA FROM OLTP TO STAGING LAYER
AND CONVERT THE DATA FROM INCONSISTENT TO CONSISTENT FORM
BEFORE LOADING TO DWH.
DWH IS NOTHING BUT OLAP SYSTEMS
IT CONTAINS DEPTS. LIKE FINANCE,SALES,PURCHASE,H.R
DATA MARTS ARE SUBSETS OF AWHWHICH ARE USED TO SATISFY THE
REPORTING REQUIREMENTS OF A DEPTS
Eg: SALES , FINANCE,PURCHASE,HR
| Is This Answer Correct ? | 3 Yes | 4 No |
wat is code review and wat actually srs or how can we create HLD,LLD.PLS,GIVE ME ANSWER AS EARLY AS FAST.
Why denormalization is promoted in universe designing?
Explain what is the advantages data mining over traditional approaches?
what are confirmed dimension? We alwys give date as a conformed dimension but if it has different format for different contries say YYMMDD for italy and MM-DD-YYYY for france.Then are they not confirmed.
4 Answers IBM, MAHINDRA, Tech Mahindra,
what are the major three types of modeling used?
0 Answers InfoAxon Technologies,
How to get the first 100 rows from the flat file into the target?
What is critical column?
Explain what is the difference between a primary and secondary actor in use case modeling?
Explain the hierarchies level data warehousing.
Explain what is power center repository?
Explain degenerate dimension table?
In a star schema, are foreign key constraints between facts and dimensions neccessary?