Database Interview Questions For Freshers
What are the different types of database models?
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What is the difference between clustered and non-clustered index?
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How can you ensure data integrity in a database?
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What is a deadlock in a database?
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What is meant by data integrity?
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What is a subquery in SQL?
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What is a stored procedure?
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What is a trigger in a database?
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What is ACID in database transactions?
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What is the purpose of a view in a database?
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What is an index in a database?
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What is a join in SQL?
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What is a foreign key?
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What is denormalization?
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What is normalization in database design?
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What is a primary key?
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What is SQL?
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What is a relational database?
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What are the advantages of using a database?
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What is a database?
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Database Intermediate Interview Questions
What is the difference between UNION and UNION ALL in SQL?
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What is database normalization?
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What is a database lock?
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What is query optimization in databases?
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What are the different types of database constraints?
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What is a surrogate key?
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What is a b-tree index?
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What is a database trigger?
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What are the advantages of using an ORM (Object-Relational Mapping)?
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What is the difference between a database and a data warehouse?
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What is an OLAP database?
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What is database replication?
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What are the different types of joins in SQL?
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What is the CAP theorem in distributed databases?
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What is a NoSQL database?
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What is a composite key?
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What is a self join in SQL?
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What is an SQL injection?
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What is database indexing?
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What is an aggregator in database queries?
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What is the difference between MongoDB and MySQL?
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What is a NoSQL database?
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What is the difference between COUNT(*) and COUNT(column) in SQL?
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Explain the concept of database denormalization.
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What is a distributed database?
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Name some popular relational database management systems.
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How can you handle database transactions in code?
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What is database schema?
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What are the advantages of stored procedures over ad-hoc queries?
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What is the difference between PRIMARY KEY and UNIQUE constraint?
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What is the difference between DELETE and TRUNCATE in SQL?
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Explain the concept of database normalization.
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What are the ACID properties?
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What is a recursive query in SQL?
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What is sharding in database scaling?
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What is a transaction log?
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What is database replication?
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What is a materialized view?
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Database Interview Questions For Experienced
What is a distributed transaction?
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What is a materialized view log?
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What is a recursive CTE in SQL?
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How does the query optimizer work in a database?
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What is a bitmap index?
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What is a composite index?
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What is database partitioning?
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What is the difference between a clustered and a non-clustered index?
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Explain ACID properties in detail.
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What is the difference between a star schema and a snowflake schema?
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What is a hash index?
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What are the advantages and disadvantages of denormalization?
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What is a materialized view refresh?
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What is a horizontal partition in a database?
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What is database replication lag?
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What is a persistent database connection?
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What is a hash join in database query execution?
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What is database materialization?
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What is a predicate in a database query?
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What is a read-only transaction?
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What is a database deadlock prevention strategy?
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What is a write-ahead log in databases?
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What is database schema comparison?
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Explain the concept of an SQL injection attack.
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What is database transaction isolation level?
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What is a database bitmap?
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What is query rewriting in database optimization?
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What is database connection pooling?
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What is the difference between a primary key and a unique key?
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Explain the concept of a foreign key cascade.
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What is a covering index?
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What is a nested transaction?
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What is a database index scan?
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What is a database deadlock situation?
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