what is the difference between normal & bulk loading? and
which one is recommended ? why?

Answer Posted / prasanna

Session log is always created in any mode you load. The
loading method is no way realted to creation of a session
log.

Normal mode: Will check for constraints while loading. Its
a process which happens record by record.

Bulk mode: This will not check for any constraints on DB.
So, generally when you don;t have any indexes or
constraints defined on your target table, you can use Bulk
mode which is faster.
In Informatica 8.6.1 , if you define bulk mode also.. if
your task need to perform Normal mode operation,
informatica will chabge it to Normal mode automatically run
time.

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Assume u have a 24CPU machine with 24GB RAM, suggest how u would like to configure Informatica ,like number of concurrent sessions, RAM requirements etc,max partitions that u would permit per mapping.

1814


how many steps are there in etl process?

718


what is an ETL or ETT? And what are the different types?

7184


can u please tell me about ........ how can explain my project before interviewer my projects are insurence domain & sales domain?

1915


diff b/w dwh & data mart diff b/w star schema & snow flake schema diff b/w fact table & dimension table what are the contents in requirement specification what are the docs needed for testing draw ur proj architecture

2304


Which transformation we use to convert 'NA' to 'Not Available'

1033


5. How many repositories can we create in Informatica? 6. What is surrogate key? 7. What is difference between Mapplet and reusable transformation? 8. What is aggregate awareness? 9. Explain reference cursor? 10. What are parallel querys and query hints? 11. DWH architecture? 12. What are cursors? 13. Advantages of de normalized data? 14. What is operational data source (ODS)? 15. What is meta data and system catalog? 16. What is factless fact schema? 17. What is confirmed dimension? 18. What is the capacity of power cube? 19. Difference between PowerPlay transformer and power play reports? 20. What is IQD file? 21. What is Cognos script editor? 22. What is difference macros and prompts? 23. What is power play plug in? 24. Which kind of index is preferred in DWH? 25. What is hash partition? 26. What is DTM session? 27. How can you define a transformation? What are different types of transformations in Informatica? 28. What is mapplet? 29. What is query panel? 30. What is a look up function? What is default transformation for the look up function? 31. What is difference between a connected look up and unconnected look up? 32. What is staging area? 33. What is data merging, data cleansing and sampling? 34. What is up date strategy and what are th options for update strategy? 35. OLAP architecture? 36. What is subject area? 37. Why do we use DSS database for OLAP tools?

2495


what happens if the info.server doesn't find the session parameter in the parameter file?

1710


What are various etl tools in the market?

715


Hi, can anyone plz share the project architecture for etl testing(banking domain) plz explain the architecture .

2783


flat filevalidation in informatica

1906


How can you use an Oracle sequences in Informatica ? You have an Informatica sequence generator transformation also. which one is better to use?

2033


What is a lookup table in etl?

838


what is the difference steps for data modeling?

2269


What is data cleaning?

714