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. Help us improve. Please let us know the company, where you were asked this question : 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 Help us improve. Please let us know the company, where you were asked this question : 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). Help us improve. Please let us know the company, where you were asked this question : 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. Help us improve. Please let us know the company, where you were asked this question : 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 Help us improve. Please let us know the company, where you were asked this question : 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. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve   Q7. What are different types of No Sql Databases ? NoSql
Ans. graph based
column based
document based Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  Ans. Fast reads
Much more reads than writes Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  aws dynamodb  aws nosql database  amazon cloud nosql databaseAns. No Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  aws dynamodb  aws nosql database  amazon cloud nosql database