Answer / rekha

DATA MERGING : IT IS THE PROCESS OF INTEGRATING THE SOURCES
WITH SIMILAR STRUCTURE AND SIMILAR TYPE
TABLE A
ENO ENAME
100 REKHA VARCHAR2(10)
TABLE B
ENO ENAME
101 SAHAN VARCHAR
SO U CAN MERGE TO COMMAON DATATYPE STRING IN THE ABOVE CASE
dATA CLEANSING :
IT IS THE PROCESS OF IDENTIFING THE INCONSISTANCIES AND
INACCURACIES

DATASAMPLING:
ARBITARILY CHOOSING THE RECORDS FROM GROUP OF RECORDS FOR
TEST

Answer / prasuna

Data Merging: It is a process of combning Non-Similar
structures or Similar structure data into Target Warehouse
system.
To combine Non Similar we can use Joins Concept,For
Similar We can use Union Concept

Data Cleansing:It is a process of converting Non Unique
data format of the source system into unique data format of
Target Warehouse system.

I dont Know definion for Data Sampling..can anyone plz give
the answer...

Answer / rakesh

Data Merging:-
Is the process of merging non similar structure data (or)similar structure data into target warehouse system;

Data Cleansing:-
IS the process of converting source Non-Unique data format into unique data format into target warehouse system.

sampling:-
it is the process ,orbitarly reading the data from
group of records.

Answer / dr.jornalist

Datamerging: This is the process of

Datacleansing:- Removing the Data inconsistencies and
Inaccuracy

Data sampling:- Arbitorily taking the data from the group
of records for the sample purpose.

What is the difference between OLTP and ODS?

4 Answers  

---

How to recover sessions in concurrent batches?

3 Answers  

---

What is an incremental loading? in which situations we will use incremental loading

2 Answers   HCL,

---

Some flat files are there, out of these having some duplicate. How do you eliminate duplicate files while loading into targets?

0 Answers   IBM,

---

How can we get two output ports in un-connect transformation?

2 Answers   Ness Technologies,

---

---

my source is like this id,name sal 10 abc 1000,10 pqr 2000, 10 xyz 3000 ,10 jkl 4000 and my requirement is like this 10 abc,pqr,xyz,jkl 2000 .... i have try for this by using expression transformatin its ok of the concatenation of second column but the thing is that on third column if u group by using agg t/r the last value will com i.e 4000 but i asked by a interviewer that i dont want the first or last column i want the middle column i.e 2000 .plz reply for the same

2 Answers   KPIT,

---

Do you have knowledge in ralph kimball methodology

1 Answers  

---

Why we require dwh in particular projects?

1 Answers   Amdocs,

---

On a day i load 10 rows in my target and on nextday i get 10 more rows to add in target. But out of 10 - 5 records are send them to target?how i can insert the remaining records

1 Answers  

---

Without source how to insert record to target?

6 Answers  

---

What is the benefit of session partitioning?

0 Answers  

---

What is target update override

2 Answers   CTS,

---