Question: Why You Should Never Use MongoDB?

Why would you use MongoDB?

Companies and development teams of all sizes use MongoDB because: The document data model is a powerful way to store and retrieve data that allows developers to move fast.

MongoDB’s horizontal, scale-out architecture can support huge volumes of both data and traffic..

Can we perform JOINs in MongoDB?

MongoDB is not a relational database, but you can perform a left outer join by using the $lookup stage. The $lookup stage lets you specify which collection you want to join with the current collection, and which fields that should match.

Which is better Cassandra vs MongoDB?

Data Model When it comes to Cassandra, there is a more traditional model. Cassandra has a table structure using rows and columns. Still, it is more flexible than relational databases since each row is not required to have the same columns. … Conclusion: If you need a rich data model, MongoDB may be the better solution.

Are there JOINs in MongoDB?

MongoDB is a non-relational database and doesn’t support joins. With right combination of $lookup, $project and $match, you can join mutiple tables on multiple parameters. This is because they can be chained multiple times. you can $lookup as many tables as you want.

Why joins are not used in MongoDB?

NoSQL == No JOIN? Document-oriented databases such as MongoDB are designed to store denormalized data. Ideally, there should be no relationship between collections. If the same data is required in two or more documents, it must be repeated.

NoSQL databases have grown in popularity over the last decade because they allow users to query their data without having to learn and master SQL. … MongoDB has grown from being just a JSON data store to become the most popular NoSQL database solution with efficient data manipulation and administration capabilities.

What is better than MongoDB?

The Three Alternatives to MongoDB JAM Stack: Fast, secure, and dynamic web sites served without web servers. PostgreSQL: SQL database known for its reliability, features, and performance. DynamoDB: NoSQL database created by Amazon Web Services (AWS)

What are the disadvantages of MongoDB?

Disadvantages of MongoDB There are a few disadvantages of the MongoDB NoSQL database as well. MongoDB uses high memory for data storage. There is a limit for document size, i.e. 16mb. There is no transaction support in MongoDB.

Does NoSQL support JOINs?

It was no surprise that the NoSQL developers turned their lack of JOINs into a feature: Let’s just keep the customer’s address in the same table as everything else! The NoSQL way is to store key-value pairs for each person.

Which NoSQL database is best?

It is an Open Source NoSQL Database which utilizes JSON to store information and JavaScript as its query language.MongoDB.Cassandra.Redis.HBase.Neo4j.Amazon DynamoDB.Couchbase.Memcached.More items…•

Can MongoDB replace Oracle?

MongoDB is open source and provides enterprise and priced services and tools, but Oracle is still better. … MongoDB gives you nice tools, but Oracle and other enterprise tools are simply better. MongoDB documents are not RDBMS records.

Is MongoDB hard to learn?

Yes mongodb is very easy and you can learn it from mongodb university and they will also provide you certificate for the same free of cost.

Which database should I learn in 2020?

RankAug 2020Jul 2020DBMS1.1.Oracle2.2.MySQL3.3.Microsoft SQL Server7 more rows•Aug 4, 2020

What language does MongoDB use?

MySQL, like many relational databases, uses structured query language (SQL) for access. MongoDB uses the MongoDB Query Language (MQL), designed for easy use by developers. The documentation compares MQL and SQL syntax for common database operations.

What is MongoDB not good for?

But some applications still need it. MongoDB, unfortunately, does not support transactions. So if you need to update more than one document or collection per user request, don’t use MongoDB. It may lead to corrupted data, as there is no ACID guarantee.

Is MongoDB worth learning 2020?

The only restriction with this is supported data structures. MongoDB is comparatively faster as well. It is also very flexible and is an excellent database for companies considering scaling. Capable of handling a huge collection of data, MongoDB is used by extremely large teams.

Is MongoDB faster than MySQL?

Performance and Speed It is magically faster because it allows users to query in a different manner that is more sensitive to workload. Developers note that MySQL is quite slower in comparison to MongoDB when it comes to dealing with large databases. It is unable to cope with large and unstructured amounts of data.