EPAM Systems Database Developer Interview Questions and Answers

Q1. Architecture of sql
Ans. 
SQL architecture refers to the structure and components of a SQL database system.
• SQL architecture includes components like storage engine, query processor, and buffer manager.

• The storage engine manages data storage and retrieval, while the query processor processes SQL queries.

• The buffer manager handles caching and memory management to optimize performance.

• Examples of SQL architectures include MySQL, Oracle, and SQL Se
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Q2. Recovery models
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Q1. Tell about yourself
Ans. 
Experienced Oracle DBA with 5+ years of hands-on experience in managing databases, optimizing performance, and ensuring data security.
• 5+ years of experience as an Oracle DBA

• Proficient in database management, performance optimization, and data security

• Skilled in troubleshooting and resolving database issues

• Strong knowledge of Oracle database architecture and SQL

• Certified Oracle Database Administrator (OCA/OCP)
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Q1. What purpose does the model database server what is replication what is dcl what are the recovery models for a data base what is dbcc
Ans. 
Answers to questions related to MS SQL Server Database Administration
• The model database is used as a template for creating new databases

• Replication is the process of copying and distributing data from one database to another

• DCL stands for Data Control Language and is used to control access to data in a database

• The recovery models for a database are Simple, Full, and Bulk-Logged

• DBCC stands for Database Console Commands ...read more
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Q1. What is the importance of recovery model what is transperent data encryption explain your sql server database expirence why would you use sql agent
Ans. 
Recovery model is important for database backup and restore. Transparent data encryption secures data at rest. SQL Agent automates tasks.
• Recovery model determines the type of backup and restore strategy to be used.

• There are three recovery models: Simple, Full, and Bulk-Logged.

• Transparent Data Encryption (TDE) encrypts data at rest and protects against unauthorized access.

• TDE uses a symmetric key called the database enc...read more
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Scenario based Troubleshooting tasks

Q1. 1. Reason for job switch 2. Why want to join HPE
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Group discussion with Client for their feedback on candidate

Q1. What is the role of Oracle DBA
Ans. 
The role of an Oracle DBA is to manage and maintain Oracle databases to ensure they are secure, efficient, and reliable.
• Installing and upgrading Oracle software

• Configuring and monitoring database performance

• Backup and recovery of data

• Troubleshooting and resolving database issues

• Implementing security measures to protect data

• Managing users and permissions
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Q1. What is rac in brief
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RAC stands for Real Application Clusters, a feature of Oracle Database that allows multiple instances to access a single database simultaneously.
• Enables high availability and scalability by distributing workload across multiple nodes

• Provides failover protection and load balancing

• Allows for parallel execution of queries across multiple nodes

• Example: A company using RAC to ensure continuous availability of their critical
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Q2. What is data gurad
Ans. 
Data Guard is Oracle's high availability and disaster recovery solution for Oracle databases.
• Data Guard provides a comprehensive set of services that create, maintain, manage, and monitor one or more standby databases to enable production Oracle databases to survive disasters and data corruptions.

• It ensures high availability, data protection, and disaster recovery for enterprise data.

• Data Guard can be used with traditi...read more
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Q1. Why u want to switch
Ans. 
Seeking new challenges and growth opportunities in a dynamic environment.
• Looking for new challenges to enhance my skills

• Interested in working with cutting-edge technology

• Seeking opportunities for career growth and advancement
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Q2. What do u expect from new company
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I expect a supportive work environment, opportunities for growth, and a collaborative team.
• Supportive work environment with open communication

• Opportunities for professional growth and development

• Collaborative team that values teamwork and diversity
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Q1. 1)Tell me about your self 2) Your educational background
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Q2. 3) why it field 4) which certification you have
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Quants, logic and English including puzzles and some gk based puzzles as well