The Merits and Demerits of MongoDB


MongoDB is considered to be quite a new performer in the data storage circuit as compared to the legendary Oracle. But MongoDB is attracting tremendous attention thanks to its document-oriented NoSQL features and capability of MapReduce calculation. The vision behind MongoDB was actually to keep a maximum number of functionalities possible and at the same time allowing horizontal scale for making the developer’s life far more convenient and easier. It is positioned between the high performance yet simple and uncomplicated key value store and the powerful yet inefficient relational database system.

MongoDB may seem to be a cool database but you must make sure that it is the perfect database for you before making the final choice. You need to examine the advantages and also the disadvantages of the database. Nothing could be more disastrous than you building up your entire application on a specific database model but later on you learn that they just are not compatible with each other.

Merits of MongoDB

Here are some advantages of MongoDB as a platform for DBA services that cannot be undermined.

Capable of Load Balancing & Sharding

If you have loads of data or just in case, you wish to distribute your database’s traffic among diverse machines for balancing the load, MongoDB is supposed to be much more advantageous than any other traditional database. Sharding is supposed to be MongoDB’s distinctive approach meant specifically for fulfilling the needs of data growth. It utilizes horizontal scaling and lets you use multiple machines to support data growth.

Really Flexible

MongoDB requires no data structures which seem to be unified across all objects that are in use. This feature makes MongoDB much easier and simpler to use than RDBMS. On the contrary, data consistency is really crucial at times and it is usually supposed to be a great thing, hence, it is recommended that you utilize unified data structure.


MongoDB is supposed to be extremely quick as all data is usually found at one single location. This holds well, only when the data being worked upon is in reality, a document. In case the data you are actually working on emulates relational model one single document could be retrieved after carrying out a number of independent queries and this would certainly make it much slower when compared to an RDBMS.

Demerits of MongoDB

Here are some disadvantages associated with the use of MongoDB.

More Memory Usage

MongoDB is known to consume more memory as it is known to store every document along with the key name. Just because joins and slow queries are not possible you seem to end up quite often, dealing with duplicate data.

Absence of Joins

Quite similar to a relational database, it is just not possible to have joins in MongoDB. If you ever require the actual functionality of joins, it is necessary to go about creating multiple queries which you would require to join manually very much in the code.

Still Under Development

SQL was developed and launched in the 1980s, while MongoDB was launched in the year 2009. As such MongoDB is not really tested and extensively documented and is also known to be lacking in the availability of experts and support.


MongoDB is supposed to be a perfect fit when there are loads of data. It is, however, not ideal for powerful related data such as your bank account information, occasions when you transfer money, numerous related bank data requires to be amended all at one specific time. They are either all done or none is done. As you could examine both the disadvantages and advantages of MongoDB, you could be switching over to it if you are not really bothered or concerned about the disadvantages. Moreover, conventional databases were in vogue for quite some time now but MongoDB is actually quite new in the field and has a wonderful potential for development. There is a great possibility that MongoDB would certainly be the most beneficial among all the databases in the years to come.