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What is the need of building a data warehouse?
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Answer / ashish goel
Data warehouse is generally designed for analyzing the
business operations but not to run the business operations.
| Is This Answer Correct ? | 7 Yes | 0 No |
Answer / vas.chiky
Having separate OLAP DWH database for analysis, increases
the performance of reports.
even during backup or crash period of oltp, OLAP database
will not get affected.
| Is This Answer Correct ? | 1 Yes | 0 No |
Generally how many Fact Tables and Dimensions Table you have used in the Project? Which one is loaded first Fact Table or Dimensions Table into the warehouse? What is the size of the Fact Table and Dimension Table? what is the size of the table and warehouse
The question was on time stamp. what is the difference between HH and HH24 when to use when.
in informatica,if i have some no.of records,if i want 1st and 10th records..what will be the method to use?
what is degenerated dimension table with scenario
Scenario:- Below is the requirement. Source:- NAME ID Requirement RAVI 1 (no need to repeat as it ID is 1) KUMAR 3 (repeat 3 times as it ID is 3) John 4 (repeat 4 times as it ID is 4) Required Out Put:- Name ID RAVI 1 KUMAR 3 KUMAR 3 KUMAR 3 John 4 John 4 John 4 John 4 Scenario 2:- Source Data ID NAME 1,2 NETEZZA,ORACLE 3,4,5 SQL Server, DB2, Teradata Required Output:- ID NAME 1 NETEZZA 1 ORACLE 3 SQL Server 3 DB2 3 Teradata
1)can anyone explain how to use Normalizer transformation for the following scenario Source table | Target Table | Std_name ENG MAT ART | Subject Ramesh Himesh Mahesh Ramesh 68 82 78 | ENG 68 73 81 Himesh 73 87 89 | MAT 82 87 79 Mahesh 81 79 64 | ART 78 89 64 | please explain what should be the normalizer column(s) The GCID column 2)Also please explain the Ni-or-1 rule.
5 Answers FCS, IBM, Satyam, TCS,
What is the difference between Bad file and Reject file? and Where u can see the Reject file? What records stored in Reject file?
What are the differences between oltp and olap?
How to delete first 3 rows & last 3 rows in target table in informatica
hi all when i am creating repository contents i am getting this error and not able to create contents please let me know wht may be the problem ORA-01031: insufficient privileges Database driver error... Function Name : executeDirect SQL Stmt : CREATE VIEW REP_DATABASE_DEFS AS SELECT DISTINCT DBDNAM DATABASE_NAME, SRCNAM DEF_SOURCE, SUBJ_NAME SUBJECT_AREA, NULL VERSION_ID, OPB_DBD.VERSION_NUMBER DATABASE_VERSION_NUMBER FROM OPB_DBD, OPB_SUBJECT, OPB_SRC WHERE OPB_DBD.SUBJ_ID = OPB_SUBJECT.SUBJ_ID AND OPB_SRC.DBDID = OPB_DBD.DBDID AND OPB_SRC.VERSION_NUMBER = OPB_DBD.VERSION_NUMBER AND OPB_SRC.IS_VISIBLE = 1 Oracle Fatal Error Database driver error... Function Name : ExecuteDirect Oracle Fatal Error Error occurred while creating the repository An error has occurred while creating contents. Dropping repository tables... Create Contents operation on repository [reposerv] ended at 01/02/2009 13:02:48. Elapsed time is 0:00:09.
While migrating the data from one environment to another environment how would you manage the connections?
What is option by which we can run all the sessions in a batch simultaneously?
Teradata 
