IBM Database Developer Interview Questions and Answers

Q1. How to run parallel queries for multiple databases ??
Ans. 
To run parallel queries for multiple databases, use parallel processing techniques and tools.
• Use parallel processing techniques such as multi-threading or distributed computing to run queries simultaneously on multiple databases.

• Consider using tools like Apache Hadoop or Apache Spark for parallel processing of queries across multiple databases.

• Ensure proper resource allocation and optimization to prevent performance is...read more
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Q2. What is normalisation technique used for database??
Ans. 
Normalization technique is used to organize data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a table into smaller tables and defining relationships between them.

• It helps in reducing data redundancy by storing data in a structured and organized manner.

• Normalization ensures data integrity by minimizing data anomalies such as update, insert, and delete anomalies.

• There...read more
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Q1. What is database architecture?
Ans. 
Database architecture refers to the design and structure of a database system.
• Database architecture includes the organization of data, storage, retrieval, and security mechanisms.

• It involves defining the relationships between data elements and how they are stored and accessed.

• Examples of database architectures include hierarchical, network, relational, and object-oriented.

• Database architecture also includes the choice ...read more
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Q2. Difference between delete and truncate
Ans. 
Delete removes rows one by one, while truncate removes all rows at once.
• Delete is a DML command, while truncate is a DDL command.

• Delete can be rolled back, while truncate cannot be rolled back.

• Delete fires triggers, while truncate does not fire triggers.

• Delete is slower as it logs individual row deletions, while truncate is faster as it logs the deallocation of the data pages.

• Example: DELETE FROM table_name WHERE condi
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In it they trying to get the information about basic knowledge about related to database and also they are give to write some queries

Related queries which you did in your past projects and also some queries to write

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. Sql related queries
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Q2. Database maintenance
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Q3. Monitoring and performance tuning
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Q1. In deep related to queries
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Q2. Backup and recovery
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Q1. Logshipping, mirroring, failover clustering and always on
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Q1. Database questions What is your roles and responsibilities Tell me about the technology you are working
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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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