Cognizant ETL Talend Developer Interview Questions and Answers

Global variables are accessible throughout the job, while context parameters are specific to a job or component.

• Global variables can be used across multiple jobs, while context parameters are limited to a single job or component.

• Global variables are defined at the project level, while context parameters are defined at the job level.

• Global variables can be modified during runtime, while context parameters are read-only.

• ...read more

Migrating a Talend job involves transferring and adapting ETL processes to a new environment or version.

• 1. Export the job from the source Talend environment using the 'Export Job' feature.

• 2. Import the job into the target Talend environment using the 'Import Job' feature.

• 3. Check for compatibility issues, especially if migrating between different Talend versions.

• 4. Update any context variables or database connections t...read more

I have worked with various Talend components including tMap, tFilterRow, tAggregateRow, tSortRow, tFileInputDelimited, tFileOutputDelimited, tJavaFlex, tJavaRow, tNormalize, tDenormalize, tPivotToColumnsDelimited, tUnpivot, tReplace, tExtractRegexFields, tExtractXMLField, tExtractJSONField, tConvertType, tJoin, tReplicate, tSample, tRandom, tSystem, tSleep, tWarn, tDie, tSendMail, tFTP, tSSH, tS3Input, tS3Output, tReds...read more