Interested to Buy Any Domain ? << Click Here >> for more details...
In what scenario we use to improve session performance by pushdown optimization?can any one give example?
- 2 Answers
- 6193 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / srinath.p
Push down Optimization is the great option provided by
informatica powercenter. this senario is used in both source
and targets are databases
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / jaspreet banga
One can push transformation logic to the source or target
database using pushdown optimization. The Integration
Service translates the transformation logic into SQL
queries and sends the SQL queries to the source or the
target database which executes the SQL queries to process
the transformations. The amount of transformation logic one
can push to the database depends on the database,
transformation logic, and mapping and session
configuration. The Integration Service analyzes the
transformation logic it can push to the database and
executes the SQL statement generated against the source or
target tables, and it processes any transformation logic
that it cannot push to the database.
just consider the example:----
Suppose a mapping contains a Filter transformation that
filters out all employees except those with a DEPTNO
greater than 40. The Integration Service can push the
transformation logic to the database. It generates the
following SQL statement to process the transformation logic:
INSERT INTO EMP_TGT(EMPNO, ENAME, SAL, COMM, DEPTNO)
SELECT
EMP_SRC.EMPNO,
EMP_SRC.ENAME,
EMP_SRC.SAL,
EMP_SRC.COMM,
EMP_SRC.DEPTNO
FROM EMP_SRC
WHERE (EMP_SRC.DEPTNO >40)
The Integration Service generates an INSERT SELECT
statement and it filters the data using a WHERE clause. The
Integration Service does not extract data from the database
at this time
| Is This Answer Correct ? | 0 Yes | 0 No |
How to improve the session performance in informatica?
Define Incremental Aggregation?
what is the difference between mapplet & stored procedure?
After we make a folder shared can it be reversed?Why?
How to create different types of slowly changing dimensions (SCD) in informatica using the mapping wizard?
What is confirmed dimension with scenario
Tell me how many tables used in Ur project and how many fact tables and dimension tables used in ur project
there is a comma separated flat file as source and there is a column in that one field is having space like "rama krishna" like that what happens when this is used as source
I want my deployment group to refer an external configuration file, while i deploy in the production environment. How can i achieve it.
If the records doesnt satisfy the filter condition where will it go?
According to his methodology what all you need before you build a datawarehouse
what is Partitioning ? where we can use Partition?
Teradata 
