1.
What is Normalization?
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Databases interview questions.
Only challenges
- 2.
What are the advantages of NoSQL over traditional RDBMS?
Answer:
- 3.
What is the difference between Data Definition Language (DDL) and Data Manipulation Language (DML)?
Answer:
- 4.
Define ACID Properties
Answer:
- 5.
What is Denormalization?
Answer:
- 6.
What are the difference between Clustered and a Non-clustered index?
Answer:
- 7.
How a database index can help performance?
Answer:
- 8.
What's the difference between a Primary Key and a Unique Key?
Answer:
- 9.
When would you use NoSQL?
Answer:
- 10.
When should I use a NoSQL database instead of a relational database?
Answer:
- 11.
What is Optimistic Locking?
Answer:
- 12.
What Is ACID Property Of A System?
Answer:
- 13.
What is the cost of having a database index?
Answer:
- 14.
How does B-trees Index work?
Answer:
- 15.
Explain the difference between Exclusive Lock and Update Lock
Answer:
- 16.
How do you track record relations in NoSQL?
Answer:
- 17.
Explain eventual consistency in context of NoSQL
Answer:
- 18.
What Is Sharding?
Answer:
- 19.
What is BASE property of a system?
Answer:
- 20.
How do you off load work from the Database?
Answer:
- 21.
What is Optimistic Locking and Pessimistic Locking?
Answer:
- 22.
How does database Indexing work?
Answer:
- 23.
What are some other types of Indexes (vs B-Trees)?
Answer:
- 24.
Name some disadvantages of a Hash index
Answer:
- 25.
Explain the differences in conceptual data design with NoSQL databases?
Answer:
- 26.
What Does Eventually Consistent Mean?
Answer:
- 27.
Is the C in ACID is not the C in CAP?
Answer:
- 28.
How do you make schema changes to a live database without downtime?
Answer:
- 29.
Why you should never use GUIDs as part of clustered index?
Answer:
- 30.
What is the difference between B-Tree, R-Tree and Hash indexing?
Answer:
- 31.
What is Index Cardinality and why does it matter?
Answer:
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