One of the first programming languages for writing smart contracts to enter the industry is Solidity. Solidity is an object-oriented and high-level programming language especially personalized for creating smart contracts. Like any other language, we also need a code editor…
Importing is a feature that most databases and language frameworks provide. This is done to make data exported from other sources usable in different forms by other programs, applications, or languages. In MongoDB, we can import data from a variety…
You know many operators that can be used to filter the selection criteria of documents from a MongoDB collection. Those operators return documents that meet specified parameters. What if we want to exclude certain criteria? Well, MongoDB has various operators…
While surfing the web, you may come across websites that redirect you to a certain page and throw up a flash message for various reasons, such as errors, warnings or successful operation. Well, we can also implement this functionality on…
In MongoDB, we store data in the form of documents. These documents may contain arrays or embedded arrays as field values. Suppose you have a big collection of records where you have millions of documents and in each of them…
One of the most popular database management services available especially for Node.js is MongoDB, which includes an expansive range of advanced tools. An application that uses such a powerful database system can include a wide range of features and functionalities.…
MongoDB database contains lots of documents. Sometimes the documents have documents in them. These documents may further contain more documents hence forming a complex structure. Querying uncomplicated documents is straightforward and we have already covered how to query MongoDB documents…
People are usually confused about which to choose MongoDB or MySQL. Well, here is the moment of truth. MongoDB provides us with so many useful operators that you can perform any type of action using them. Whether it is extremely…
As we know, MongoDB documents have the ability to possess arrays as field values, these arrays may enclose multiple elements. The $size operator can clubbed with other MongoDB methods like find(), findOne(), etc to filter documents based on the number…
You must have seen that in all our articles we have mentioned the date of publishing the article right after the title. Let’s say you are also developing an application and using MongoDB as the database for your app. Now…