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Database - Interview Questions and Answers for 'Nosql' - 9 question(s) found - Order By Newest

 Q1. Is there any schema in mongo DB ?MongoDB
Ans. There is schema in mongo-db but the schema need not to be defined before creating collection.

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   Like         Discuss         Correct / Improve     mongodb  nosql  bigdata     Asked in 1 Companies


 Q2. Difference between relational databases and NoSQL databases ?Database
Ans. https://www.mongodb.com/scale/nosql-vs-relational-databases

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   Like         Discuss         Correct / Improve     database management  nosql database  relational database     Asked in 1 Companies        frequent


 Q3. How different is the Search algorithm when we query Cassandra Tables and When we query Oracle Tables ?Cassandra
Ans. Relational Database uses linear search if we don't query using indices. Performance for linear search is O(n). If indices have been used , relational database uses binary search. Performance for binary search is O(Log n).

Casandra uses hash search. Performance for Hash Search is O(1).

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   Like         Discuss         Correct / Improve     cassandra vs oracle  nosql vs relational  search algorithm


 Q4. Which of the following databases - Cassandra / Oracle - provides more flexibility about querying the database ?Database
Ans. Oracle as it is not modeled for a particular query or set of queries.

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   Like         Discuss         Correct / Improve     Cassandra  Nosql database  nosql vs relational database


 Q5. Which is the best NoSql Database for Performance ?NoSql
Ans. Possible Answer - doument base - monogodb

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   Like         Discuss         Correct / Improve     Nosql Database


 Q6. What are different in memory data structures that are used in No Sql Database ?NoSql Database
 This question is still unanswered. Can you please provide an answer.


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 Q7. What are different types of No Sql Databases ?NoSql
Ans. graph based
column based
document based

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 Q8. What is the ideal use case for DynamoDB ?Amazon Web Services (AWS)
Ans. Fast reads
Much more reads than writes

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   Like         Discuss         Correct / Improve     aws dynamodb  aws nosql database  amazon cloud nosql database


 Q9. Can we load Yaml files into AWS DynamoDB ?Amazon Web Services (AWS)
Ans. No

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   Like         Discuss         Correct / Improve     aws dynamodb  aws nosql database  amazon cloud nosql database



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