An enterprise blockchain is a shared ledger for organizations that need a common history but do not want one participant to own every write. The useful question is whether the participants need shared verification and governance, not whether the workload…
No WordPress security plugin makes a site fail-proof, so choose one whose controls match your risks while you keep WordPress, themes, and plugins updated and retain a tested backup path. I checked the current WordPress.org listings for Wordfence and Kadence…
In today’s world where AI is gaining too much popularity, suppose, you have created a website to show AI-generated articles on tending topics. These articles are stored in a MongoDB collection named “Articles”. Each document has a field “AI” containing…
In our previous tutorial, we learned everything about MongoDB findOneAndUpdate() and findAndModify() methods, but these methods can only update one document at a time and can be suitable for cases like updating a particular post, updating a single user information,…
In MongoDB, two popular methods for updating documents are findOneAndUpdate() and findAndModify(). In this article, we will explain both methods, demonstrate them on different datasets, find the differences and discover which one is best suited for your needs. MongoDB findOneAndUpdate()…
The term “is not null” means that there is some value present, except for null. It can be anything, like an empty string, zero, or any other value but not null. The null values are useless in terms of any…
It’s easy to find documents in a collection in the MongoDB database using methods like find() and findOne(), but when there is a need to find and in the meantime update a document, we have a special method findOneAndUpdate(). This…
In MongoDB, we use arrays to store different types of values like strings, numbers, objects, and even arrays. Now if we want to add a new element to an array present inside the documents, we usually use the $push operator…
If you want to check if a field exists in a collection or filter out documents based on a certain field for either including or excluding them, you can use the $exists operator. Let’s quickly learn about it. MongoDB $exists…
MongoDB documents often store arrays, and once an array holds objects instead of plain values, normal queries stop being reliable. The elemMatch MongoDB fixes this by forcing every condition you write to match a single array element, not different elements…
