IBM Developer Interview Questions and Answers

Circuit breaker design pattern is used to prevent a system from repeatedly trying to execute an operation that is likely to fail.

• Circuit breaker monitors the number of failures and trips when a threshold is reached.

• It can be reset after a certain period of time to check if the operation is successful again.

• Helps in improving system stability and resilience by handling failures gracefully.

Transformer stage is a processing stage in IBM InfoSphere DataStage used for data transformation.

• Used for transforming data from source to target in DataStage

• Can perform various operations like filtering, aggregating, joining, etc.

• Supports parallel processing for efficient data transformation

Reverse a given string by iterating through it backwards and appending each character to a new string.

• Create a new empty string to store the reversed string

• Iterate through the original string from the last character to the first character

• Append each character to the new string

• Return the new string as the reversed string

Azure Databricks is a unified analytics platform that combines big data processing and machine learning.

• Collaborative environment for data scientists, data engineers, and business analysts

• Integrated with Azure services for data storage, processing, and analytics

• Supports popular programming languages like Python, Scala, and SQL

• Provides tools for data visualization and machine learning model development

Cache in Databricks is a mechanism to store intermediate results of computations for faster access.

• Cache in Databricks is used to store intermediate results of computations in memory for faster access.

• It helps in reducing the time taken to recompute the same data by storing it in memory.

• Data can be cached at different levels such as DataFrame, RDD, or table.

• Example: df.cache() will cache the DataFrame 'df' in memory fo

ABAP Dictionary is a central repository for data definitions used in SAP applications. ALV report events are user actions in ALV grid. OOPs ABAP is object-oriented programming in ABAP.

• ABAP Dictionary is used to define and manage data definitions in SAP applications

• ALV report events include user actions like clicking on a row or column header

• OOPs ABAP allows for object-oriented programming concepts like classes and inhe