Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Oracle (3258)
SQL Server (4518)
MS Access (429)
MySQL (1402)

Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)

DB Development (113)
SQL PLSQL (3328)
MongoDB (502)
IBM Informix (50)

Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)

Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

How to Optimize Database Queries for Performance?

1 295

What are Stored Procedures and When would we Use Them?

1 318

How to Handle Missing Data in a Database?

1 319

Describe the Process of Feature Engineering using SQL.

1 310

What are the different types of databases?

1 531

What are ACID properties in databases?

1 425

What is the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN?

1 513

What is indexing, and how does it improve performance?

1 450

What is a deadlock in SQL? How can you prevent it?

1 505

What is the CAP theorem?

1 525

How would you optimize a slow SQL query?

1 576

How do you handle duplicate records in a database?

1 471

How would you design a database for an e-commerce website?

1 505

How do you ensure database security?

1 563

What would you do if a database crashes in production?

1 382

Un-Answered Questions { Databases }

What is merge in oracle?

789

How many rows can sqlite handle?

794

Explain intellisense for query editing

771

Why do we need mongodb?

What is the difference between a subquery and a join?

727

Does sql*plus also have a pl/sql engine?

787

What are table partitions? How is it different with ase 15.0 version?

624

What is flexfileds and use of flexfileds in odi?

422

How to deactivate triggers?

679

What is a database access?

655

Explain for what purpose you can use neo4j databases?

What is schema in reading comprehension?

583

How to create a user name in a database?

796

Using the relations and the rules set out in the notes under each relation, write statements to create the two sequence generators specified in the notes.

1858

How can you delete databases in neo4j?

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