Explain different widgets.
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Different Widgets in WordPress Widgets are small blocks of content or functionality that can be added to different areas of a WordPress website, such as the sidebar, footer, header, or…
September 2026
MongoDB distinct() Operator & MongoDB aggregate()
MongoDB distinct() Operator In MongoDB, distinct() is used to find unique values of a particular field from a collection. It returns the unique values in an array. Syntax Example: Employee…
MongoDB distinct() Operator
In MongoDB, distinct() is used to find unique values of a particular field from a collection. It returns the unique values in an array. Syntax Example: Employee Collection Suppose emp…
MongoDB Element Query Operators and Array Query Operators
MongoDB Query Operators 1. Element Query Operators Element operators are used to check the existence and data type of a field. $exists Checks whether a field exists in a document.…
MongoDB: sort(), skip(), and limit()
These three methods are commonly used with find() to sort records, skip records, and restrict the number of records returned. Assume we have a students collection: Example data: 1. sort()…
Mongodb remove()
In MongoDB, remove() is used to delete documents from a collection. Note: remove() is an older MongoDB method. In modern MongoDB, use deleteOne() or deleteMany(). 1. Remove One Document Suppose:…
Mongodb Update()
Here are different MongoDB update() examples in English, explained simply. Note: In modern MongoDB, use updateOne() and updateMany() instead of the older update() method. 1. Update One Field Suppose we…