what is data modeling?
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how do u decide whether u need to do aggregations at database level or at Informatica level?
two sources S1,S2 containing measures M1,M2,M3, 4 dimensions D1,D2,D3,D4, 1 Fact F1 containing measures M1,M2,M3 and surrogate keys K1,K2,K3,K4 (a) write a sql statement to populate Fact table F1 (b) Design a mapping in Informatica for loading of fact table F1.
list and discuss two approaches for updation of target table in Informatica and how they are different.
what are business components in Informatica?
A mapping contains source table S_Time(stat_year,end_year) target table TIM_DIM(date,day,month,year,quarter) stored procedure transformation: A procedure has two parameters I_end_year and output parameter as O_date ,day , month, year, quarter, If this session is running, how many rows will be available in the target and why?
Mention few test cases and explain them?
what is the difference between cardinality and Nullability?
can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.
what is the use of server manager?
How can write SQL Overwrite to get Daynamic rows from the source in SQ transformation!(Any Example)
What are the steps involved in etl process?