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Series
A series on Application Development. A guide from Newbies and refresher for experienced.
To disable a field after selecting a checkbox in Power Apps, you can use the "OnChange" property of the checkbox control. Here's an example: Add a checkbox control to your form, and name it "Checkbox1". Add the field that you want to disable, and n...
The Data Access Layer (DAL) is a programming pattern that separates the application's business logic from the data storage and retrieval operations. It acts as an intermediary between the application and the database, providing a set of methods and i...
$match: Filters documents to pass only the documents that match the specified condition. db.collection.aggregate([ { $match: {field: value} } ]) $project: Reshapes the documents in the pipeline, including or excluding fields and changing the dat...
If you missed Part 1, get a quick look here. $indexStats: This example returns statistics on the usage of each index in the collection, including the name of the index, the number of accesses, and the size of the index. db.collection.aggregate([ {...
$addFields: db.collection.aggregate([ { $addFields: { newField: { $sum: ["$field1", "$field2"] } } } ]) This example adds a new field "newField" to the documents in the collection and sets its value to the sum of the values of "field1" and "field...
