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Primary key uniquely identifies each record in a table, while unique key ensures that each value in a column is unique.
Primary key does not allow NULL values, while unique key allows one NULL value.
A table can have only one primary key, but multiple unique keys.
Primary key automatically creates a unique index, while unique key does not.
Primary key is used to establish relationships between tables, while unique key is u...
Securing a firewall involves configuring access control, implementing intrusion detection systems, and regularly updating security policies.
Configure access control lists to allow only necessary traffic
Implement intrusion detection systems to monitor for suspicious activity
Regularly update firewall rules and security policies to address new threats
Enable logging and monitoring to track firewall activity
Use strong authe...
I applied via Walk-in and was interviewed in Jul 2022. There were 2 interview rounds.
I applied via Recruitment Consulltant and was interviewed before Mar 2023. There were 2 interview rounds.
Case study for smart city emerging technology
To sustain a project, it is important to have clear goals, effective communication, stakeholder engagement, risk management, and continuous monitoring.
Set clear project goals and objectives to keep the team focused.
Maintain open and effective communication channels with all stakeholders.
Engage stakeholders throughout the project to ensure their buy-in and support.
Implement a robust risk management plan to identify and ...
I applied via Naukri.com and was interviewed in Jun 2021. There were 4 interview rounds.
Volatile is a keyword in Java used to indicate that a variable's value may be modified by multiple threads.
Volatile variables are not cached in thread's local memory
Changes made to volatile variables are immediately visible to other threads
Volatile keyword is used to ensure visibility and ordering of variables in multithreaded environment
Example: volatile int count = 0;
Java 1.8 introduced lambda expressions, default methods, and functional interfaces.
Lambda expressions allow functional programming in Java.
Default methods allow adding new methods to interfaces without breaking existing implementations.
Functional interfaces are interfaces with a single abstract method, used for lambda expressions.
Stream API for processing collections and arrays.
Date and Time API for easier handling of ...
I applied via Referral and was interviewed in Aug 2021. There was 1 interview round.
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I applied via Recruitment Consultant and was interviewed before Oct 2020. There were 3 interview rounds.
posted on 9 May 2017
I appeared for an interview before May 2016.
based on 5 interview experiences
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