Beinex Data Engineer Interview Questions and Answers

Q1. What is index and types of index
Ans. 
An index is a data structure that improves the speed of data retrieval operations in a database.
• Types of indexes include clustered index, non-clustered index, unique index, and composite index.

• Indexes can be created on one or multiple columns in a table.

• Indexes help in quickly locating data without having to scan the entire table.

• Examples of indexes are primary key indexes, foreign key indexes, and secondary indexes.
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Q2. What is SCD and its type
Ans. 
SCD stands for Slowly Changing Dimension, which is a concept used in data warehousing to track changes in data over time.
• SCD Type 1: Overwrites old data with new data, losing historical information.

• SCD Type 2: Keeps multiple versions of the same record, each with a different timestamp.

• SCD Type 3: Maintains separate columns for current and previous values, limiting historical data tracking.

• SCD Type 4: Uses separate hist...read more
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Q3. Tell me the process of data pipeline
Ans. 
Data pipeline is a series of processes that collect, transform, and load data from various sources to a destination for analysis.
• Data ingestion: Collecting data from various sources like databases, APIs, logs, etc.

• Data processing: Cleaning, transforming, and enriching the data to make it usable for analysis.

• Data storage: Storing the processed data in a data warehouse, data lake, or other storage solutions.

• Data analysis...read more
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Q1. What is excel? How it is work.
Ans. 
Excel is a spreadsheet program used for organizing, analyzing, and storing data in tabular format.
• Excel is part of Microsoft Office suite.

• It allows users to create tables, charts, graphs, and perform calculations.

• Data can be entered manually or imported from external sources.

• Formulas and functions can be used to manipulate data.

• Excel is commonly used for financial analysis, budgeting, and data visualization.
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Q2. How to work word?
Ans. 
To work with words, one must have strong typing skills, attention to detail, and knowledge of data entry software.
• Practice typing regularly to improve speed and accuracy.

• Use spell check and grammar tools to ensure accuracy.

• Familiarize yourself with data entry software such as Microsoft Excel.

• Organize and prioritize tasks to efficiently input data.

• Double-check entries for errors before submitting.

• Seek feedback and train...read more
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Q3. How to work in ms excel? Benifit to speak.
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Q4. What is microprocessor?
Ans. 
A microprocessor is a small electronic device that functions as the central processing unit of a computer.
• Microprocessors are made up of millions of tiny components like transistors and resistors.

• They execute instructions and perform calculations for various tasks.

• Examples of microprocessors include Intel's Core series and AMD's Ryzen series.
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Basic questions for freshers

More focus on the participation and collective contribution of candidates along with communication skills.

Q1. DSa, DBMS, joins, and other basic c, c++ questions
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Q1. Interests hobbies Co-curricular activities and such related questions
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Basic questions related to time, distance etc. speed is the most important part for this.

Normal group discussion based on a particular topic

Q1. They will test your basic knowledge in programming language and some coding
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Q1. Behavioural questions
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QUESTIONS WERE MODERATE WHERE WE HAVE TO DO 45 IN 50 MINUTES

SQL QUERY AND ONE CODING QUESTION