User:Meet.shrota4015/sandbox

== DISADVANTAGES 1.) Not Support transacation MongoDB is the best fit on the off chance that you have a considerable measure of information, however, the connection between them is powerless, for instance, a surge of autonomous occasions, really the early use of MongoDB is to record online advertisements clicking statistical data. It's not fit for solid related information like your financial balance data, at whatever point you exchange cash, numerous related bank information should be altered in the meantime, and they either all done, or nothing is finished. RDBMS do this by an exchange. To conquer this, MongoDB bolsters nuclear activities like nuclear addition and decrement, findAndModify. Notice that in MongoDB, just change to the single document is nuclear, yet activities that include various documents are not nuclear. So the best practice is you should store however much as could reasonably be expected data in the single document, abstain from spreading information over various documents, in RDBMS this procedure called denormalization. Again this restrains the zones that MongoDB can be utilized, on the off chance that you require a gigantic of denormalization to reshape the information model, it's a notice sign, you might be in an ideal situation remain in RDBMS and discover another approach to pick up scalability. 2.) Not support join operation

Since the document contains all that you require, so there is no join. This is likewise the exchange of keeping in mind the end goal to have the capacity to effortlessly scale horizontally. However, you can simply play out your join by making numerous queries. 3.) RAM limitation MongoDB utilizes memory mapped record, let the Operating System handle the storing. The span of you database is restricted by virtual memory gave by Operating System and equipment. On the 32bit machine, you can just spare as much as 4 GB information on the grounds that the system can just address 4GB of memory and the OS will use no less than 2GB of space, leaving 2GB for MongoDB mapped records. You can't do much for genuine application with 2GB space. For generation condition, a 64bits system is an unquestionable requirement. On the off chance that you are playing it on you claim 32bit machine, don't spare genuine information into MongoDB. At the point when the information surpasses the limit, your inclusions may fall flat with no notices! Conclusion MongoDB does not have a few highlights of the relational database like the exchange or join, yet it picks up the capacity to scale horizontally effectively and adaptable schema that simple to control with JSON like information design.