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MongoDB > Learn MongoDB > What are the disadvantages of MongoDB?
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What are the disadvantages of MongoDB?

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Data size in MongoDB is typically higher due to e.g. each document has field names stored it less flexibity with querying (e.g. no JOINs) no support for transactions - certain atomic operations are supported, at a single document level at the moment Map/Reduce (e.g. to do aggregations/data analysis)...
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  • Data size in MongoDB is typically higher due to e.g. each document has field names stored it
  • less flexibity with querying (e.g. no JOINs)
  • no support for transactions - certain atomic operations are supported, at a single document level
  • at the moment Map/Reduce (e.g. to do aggregations/data analysis) is OK, but not blisteringly fast. So if that's required, something like Hadoop may need to be added into the mix
  • less up to date information available/fast evolving product
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Joins are not supported , since the data base does not support joins we it results in increased usage of memory. The document size is limited to 16 MB. Nesting of documents cannot go over than 100 levels .
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Hi Sir/Madam, This is Nagaraju Tamada, I completed my B-Tech (CSE)-2012 after that I did 2 projects on Oracle(Pl/SQL) but my friends suggest to learn mongodb , but I don't know about mongodb course and where it is used ? how is it works?,how to learn course and I want class room classes so please provide the details about mongodb course and which institute is best for the mongodb course,Thanking You.
Hi Nagaraju, MangoDB is one of the fastest growing NoSQL databases. It is very good for handling unstructured data and has become quite popular for internet based use cases like e-commerce. It is not...
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Hi, I'm an automation test engineer and a certified s/w test engineer (CSTE - QAI). I work with databases at a beginner level but I'm planning to master working with databases. I'm interested in taking a certification exam as-well. I am not interested in making a career switch but want to add it to my skill set. Considering my background, what training/certification should I go for? Please also suggest some beginner level certifications that would be helpful for me to add to my skill set.
Should be learn Biggener of Database then Advance Courses in DB.
Kumar

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