Micro Moulds and Plastics Softwaretest Engineer Interview Questions and Answers

Q1. Some basic inheritance and overloading questions
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Q2. Prepare for interface with same methods in one base class
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Q1. Javascript questions
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Q1. What is a bloom filter in hbase ?
Ans. 
A bloom filter in HBase is a data structure used to test whether a given element is a member of a set.
• Bloom filters are used to reduce the number of disk reads in HBase by quickly determining if a row may exist in a table.

• They are implemented as a compact array of bits, with multiple hash functions used to map elements to bits.

• Bloom filters can produce false positives but not false negatives, making them useful for pre...read more
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Q2. Write a query to remove duplicate rows in pyspark based on primary key.
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Use dropDuplicates() function in pyspark to remove duplicate rows based on primary key.
• Use dropDuplicates() function on the DataFrame with the primary key column specified.

• Specify the subset parameter in dropDuplicates() to specify the primary key column.

• Example: df.dropDuplicates(['primary_key_column'])
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Intermediate DSA questions on strings

It's bit about the case study related to continuos data and need to find the n highest number at any given time .

Q1. What is ETL, and can you explain it in a structured manner?
Ans. 
ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a consistent format, and load it into a target database or data warehouse.
• Extract: Involves extracting data from different sources such as databases, files, APIs, etc.

• Transform: Data is cleaned, validated, and transformed into a consistent format suitable for analysis.

• Load: The transformed data is loade...read more
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Q2. What is the correct structure of a DBMS diagram?
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The correct structure of a DBMS diagram includes entities, attributes, relationships, and keys.
• Entities represent the main objects in the database (e.g. Customer, Product).

• Attributes are characteristics of entities (e.g. CustomerID, ProductName).

• Relationships show how entities are related to each other (e.g. one-to-many, many-to-many).

• Keys uniquely identify each record in a table (e.g. Primary Key, Foreign Key).
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Q1. Strengths,weakness,why do we hire you, what are your hobbies
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Mostly was on javascript fundamentals and react basics.

Q1. Javascript basics
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