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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.
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...
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...
I applied via Approached by Company and was interviewed in Nov 2023. There was 1 interview round.
Yes, I am able to switch locations for work if required.
I am open to relocating for the right opportunity
Have previous experience moving for work
Willing to consider different cities or countries for work
I applied via AmbitionBox and was interviewed before Apr 2022. There were 3 interview rounds.
SOLID principles are a set of design principles in object-oriented programming that help in creating maintainable and scalable software.
S - Single Responsibility Principle (SRP)
O - Open/Closed Principle (OCP)
L - Liskov Substitution Principle (LSP)
I - Interface Segregation Principle (ISP)
D - Dependency Inversion Principle (DIP)
Java doesn't support operator overloading to maintain simplicity and avoid ambiguity.
Java was designed to be a simple language, and operator overloading can make code more complex and harder to read.
Operator overloading can also lead to ambiguity in code, making it difficult to understand the intended behavior.
Java provides alternative ways to achieve the same functionality as operator overloading, such as using method...
I have worked on various projects including a healthcare management system and an e-commerce platform.
Developed a healthcare management system to streamline patient records and appointments.
Contributed to the development of an e-commerce platform with features like product catalog and shopping cart.
Implemented a real-time chat application using websockets for seamless communication between users.
Optimized database quer...
Apptitude and coding questions on threads
2 coding questions are available but I submitted 1answer
I applied via Campus Placement
Basic 20 min test with mind questions
I applied via Recruitment Consultant and was interviewed in Jun 2021. There were 3 interview rounds.
Fail fast prioritizes speed of detection and resolution, while fail safe prioritizes safety and minimizing harm.
Fail fast approach is commonly used in agile development where quick feedback is essential
Fail safe approach is commonly used in critical systems such as medical devices or aviation
Fail fast can lead to more errors and instability if not properly managed
Fail safe can lead to slower response times and increase...
I applied via Company Website and was interviewed in Apr 2022. There were 3 interview rounds.
General questions
I applied via Job portal and was interviewed in Dec 2022. There were 4 interview rounds.
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