Broadridge Financial Solutions Interview Questions, Process, and Tips

Q1. What is java multithreading
Ans. 
Java multithreading is a feature that allows concurrent execution of multiple threads within a single process.
• Multithreading in Java allows multiple threads to run concurrently within a single process.

• Each thread has its own stack and executes independently, but shares the same memory space.

• Java provides built-in support for multithreading through the java.lang.Thread class and java.lang.Runnable interface.

• Multithreadi...read more
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Q2. Explain exception hierarchy
Ans. 
Exception hierarchy is a way to organize and categorize different types of exceptions in a software system.
• Exceptions are organized in a tree-like structure with a base class at the top and more specific exception classes below.

• Base class usually is 'Exception' or 'Throwable', with more specific classes like 'IOException', 'NullPointerException', etc.

• Subclasses can provide more specific information about the cause of t...read more
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Easy Aptitude and medium level cs fundamental questions

Q1. What is datawarehouse
Ans. 
A datawarehouse is a centralized repository that stores integrated and structured data from multiple sources for analysis and reporting.
• Datawarehouse stores historical data for analysis

• It is used for decision-making and business intelligence

• Data is extracted, transformed, and loaded (ETL) into the datawarehouse

• Examples: Amazon Redshift, Snowflake, Google BigQuery
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Q2. How to open multiple sessions in postgresql
Ans. 
To open multiple sessions in PostgreSQL, you can use multiple connections from different clients.
• Use different client applications to connect to the PostgreSQL database with different credentials

• Each client connection will create a separate session in PostgreSQL

• You can also use connection pooling to manage multiple sessions efficiently
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Q3. How to flatten json
Ans. 
Flattening JSON involves converting nested JSON structures into a flat key-value format.
• Use a programming language with built-in functions for flattening JSON, such as Python's json_normalize() function.

• Recursively iterate through the JSON structure to extract all nested key-value pairs.

• Map each nested key to a flat key by joining the parent keys with a separator, such as a dot.

• Handle arrays by creating separate keys f
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Q4. How to flatten xml in python
Ans. 
Use the xmltodict library in Python to flatten XML data structures.
• Install the xmltodict library using pip install xmltodict

• Use xmltodict.parse() to convert XML data to a Python dictionary

• Use json.dumps() to convert the dictionary to a JSON string for a flattened structure
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Q5. How to do self join
Ans. 
Self join is used to join a table with itself to compare rows within the same table.
• Use the same table name for both instances in the query

• Specify aliases for each instance of the table to differentiate them

• Use a join condition to specify how the rows should be matched
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Q1. Technical questions based on projects
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Q2. Based on sql questions were asked
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Q1. About the project
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Q2. How much mb the latest project consumed and what are ur weakenesses.
Ans. 
The latest project consumed approximately 500 MB of data.
• The latest project consumed 500 MB of data.

• It is important to track data consumption for future optimization.

• Weaknesses can include lack of experience with certain tools or techniques.

• Weaknesses can also include difficulty in time management or communication.
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Take home test and it was super easy. Leetcode style 2 questions and you get 45 mins to complete it.