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SQL is a programming language used for managing and manipulating relational databases.
SQL stands for Structured Query Language
It is used to create, modify, and query databases
Common SQL commands include SELECT, INSERT, UPDATE, and DELETE
SQL can be used with various database management systems such as MySQL, Oracle, and SQL Server
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posted on 11 Jul 2021
I applied via Naukri.com and was interviewed in Jan 2021. There were 3 interview rounds.
Angular is a popular front-end framework for building web applications.
Angular is developed and maintained by Google.
It uses TypeScript for building scalable and maintainable applications.
Angular has a powerful CLI for generating components, services, and more.
It has a large and active community with many third-party libraries and plugins available.
Angular has a modular architecture that allows for easy code reuse and
I applied via Recruitment Consultant and was interviewed in Oct 2020. There were 6 interview rounds.
I applied via Naukri.com and was interviewed before Mar 2020. There were 4 interview rounds.
Hashtable is synchronized while hashmap is not.
Hashtable is thread-safe while hashmap is not.
Hashtable does not allow null keys or values while hashmap allows one null key and multiple null values.
Hashtable is slower than hashmap due to synchronization.
Hashtable is a legacy class while hashmap is a newer implementation.
Hashmap is not thread-safe while Concurrent Hashmap is thread-safe.
Hashmap is not suitable for multi-threaded environments as it can lead to race conditions and data inconsistencies.
Concurrent Hashmap allows multiple threads to access and modify the map concurrently without any data inconsistencies.
Concurrent Hashmap uses a technique called lock striping to achieve thread-safety.
Concurrent Hashmap is slower than Hashma...
I applied via Approached by Company and was interviewed before Apr 2021. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before Apr 2021. There was 1 interview round.
I appeared for an interview before Nov 2020.
I appeared for an interview in Sep 2017.
I appeared for an interview in Sep 2019.
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