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Oracle Data Integrator Interview questions for experience

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Explain what is ORACLE DATA INTEGATOR? why is it different from the other ETL tools.

 Ans 1: ORACLE DATA INTEGATOR stands for Oracle Data Integrator. It is different from another ETL tool in a way that it uses E-LT approach as opposed to ETL approach. This approach eliminates the need of the exclusive Transformation Server between the Source and Target Data server. The power of the target data server can be used to transform the data. i.e. The target data server acts as staging area in addition to its role of target databasel. While loading the data in the target database (from staging area) the transformation logic is implemented. Also, the use of appropriate CKM (Check Knowldege Module) can be made while doing this to implement data quality requirement.
Q3.How will you bring in the different source data into ORACLE DATA INTEGATOR?

 you will have to create dataservers in the topology manager for the different sources that you want.

 Q4.How will you bulk load data?

 In ORACLE DATA INTEGATOR there are IKM that are designed for bulk loading of data.

 Q6.How will you bring in files from remote locations?

 We will invoke the Service knowledge module in ORACLE DATA INTEGATOR,this will help us to accesses data thought a web service.

 Q7.How will you handle dataquality in ORACLE DATA INTEGATOR?

 There are two ways of handling dataquality in ORACLE DATA INTEGATOR....the first method deals with handling the incorrect data using the CKM...the second method uses Oracle data quality tool(this is for advanced quality options).




Virtuas ORACLE DATA INTEGATOR (ODI) Interview Questions

 1) What are the variable types?
2) What are the knowledge modules types?
3) What are the IKM types?
4) What are the LKM types?
5) How you find which the latest record in SCD type2 transformation is?
6) When you use CKM?
7) Have you created sequence? When will you use?
8) What is your daily activities?
9) Have you attended the client meetings?
10) If you are working Microsoft excel, which type of file you used .excel or .csv?
11) Have you created fact table and dimension tables?
12) How many knowledge modules you used?
13) When you used JKM ?
14) Can you joined two sources without common column?
Mahindra Satyam ORACLE DATA INTEGATOR (ODI) Interview Questions 1st Round

 1. How many types of km’s?
2. Step by step explain for the Flat file?
3. What is the Cdc?
4. What is the Repository and how many types of repository?
5. What is variable and how many types of variable?
6. In topology manager where the data are stored?
7. Explain the designer?
8. Difference between ETL and E_LT?
9. What are the constraints are used in Ur project?
10. What is the use of the Service Knowledge module?
TCS Interview:
Tell me about ur self?
Types of Scd’s?
Where is the multi connections are used in ORACLE DATA INTEGATOR?
How many types of dimensions in oracle?
Difference between ETl and E_lt?
In my source different types of technologies like that (File, Excel, and Xml)? Which data loaded are in target db?
Can migrate the one ORACLE DATA INTEGATOR studio to another ORACLE DATA INTEGATOR studio?


TCS INTERVIEW QUESTIONS:

 ODI:
1. Tell me about Ur self?
2. What is odi? & briefly explain odi architecture?
3. How many types of knowledge Modules? Where are used in km?
4. Diff b/w 10g & 11g in odi?
5. What is data store? How to create data store?
6. What is odi studio?
7. Diff b/w ETL/E-LT?
8. What flow of MS-Excel in odi?
9. Odi used in oracle products?
10. What is a user function?
11. What is variable? What is Flow of variable?
SQL:
12. Diff b/w case & decode?
13. Diff b/w delete & truncate?
PL/SQL:
14. How many types of predefined exceptions?
15. What is cursor? How types of cursor types attributes?


Virtuas Interview Questions

 1) What are the variable types
2) What are the knowledge modules types?
3) What are the IKM types?
4) What are the LKM types?
5) How you find which is the latest record in SCD type2 transformation?
6) When you use CKM ?
7) Have you created sequence? when will you use?
8) What is your daily activities?
9) Have you attend the client meetings?
10) If you are working microsoft excel, which type of file you used .excel or .csv?
11) Have you created fact table and dimension tables?
12) How many knowledge modules you used?
13)When you used JKM ?
14) Can you joined two sources without common column?
TCS Interview for 2nd Round

 1. What is the scd? And Types of SCD?
2. Difference between Row Id and Row Num?
3. What is the normalization?
4. Difference between delete and truncate?
5. What is the load plans in odi?
6. What is the data quality in odi?
7. What are the constraints in odi?

 Infosys Interview Questions

 1. How to send the e-mails for odi?
2. How to create sequence in odi?
3. Explain for repository?
4. How many types of km’s? And you what are the type’s km are used in ur project?
5. What is the variable?
6. How many types of v variables’? Where will appear for variables in odi?
7. What is the load plans? And how to create for the load plans?
8. What is the data quality?
9. File steps?


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