Knowledge check

1.

In Azure Cosmos DB, what would be the most optimum way of managing referential integrity between different containers?

When an application creates any changes to one container, also make sure it duplicates the changes on the referenced container.

Create an Azure Cosmos DB Function that periodically searches for changes done to the containers and replicate those changes to the referenced containers.

Use an Azure Function trigger for Azure Cosmos DB to use the change feed processor to update the referenced containers

2.

Consider the following Scenario: The application team created an application that saves the device metrics generated every minute by the different IOT (Internet of Things) devices. The team identified two entities that they would like to collect data for, the devices and the device metrics generated by each device. The team was going to create two containers for these different entities but their data engineer suggests that they place both entities, in one single container. What should the team do?

Create a document with the deviceid property and the rest of the device data and embed each metrics collection into the document with the devicemetricsid property and all the metrics data

Create a document with the deviceid property and the rest of the device data, add a property called type and give it the value device. Create a document for each metrics data collected with the devicemetricsid property and all the metrics data, add a property called type and give it the value devicemetrics

Create a document with the deviceid property and the rest of the device data, add a property called type and give it the value device.' Create a document for each metrics data collected with the devicemetricsid and deviceid properties and all the metrics data, add a property called type and give it the value devicemetrics

3.

Consider the following Scenario: The developer team created an application that saves the device metrics generated every minute by the different IOT devices. The team identified two entities that they would like to collect data for, the devices and the device metrics data generated by each device. The team was going to create two containers for these different entities but their data engineer suggests that they place both entities, in one single container. The team would like to be able to return the device's general data and the number of metrics collections per device. How could we keep track of this information inside the container?

Use a GROUP BY parameter in the query and use the aggregate count to return the number of device metrics collections per device.

Add a new property to the device documents called metricscollectioncount and update it with the current number of metrics collection documents. When the application or Azure function adds a new metrics collection, also add 1 to the metricscollectioncount property.

Add a new property to the device documents called metricscollectioncount and update it with the current number of metrics collection documents. When the application or Azure function adds a new metrics collection, also add 1 to the metricscollectioncount property inside a transactional batch.

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