Your query to verify that your Redis key is configured to support expiring user information on a defined interval returns -2, What does this value indicate?

You are designing a MongoDB schema to support queries that will include lookups. What should you do?

What is the aggregation operator for a join concept in MongoDB?

For your mobile application, you need to select a Google cloud databse that can support compound, filtered document queries. Which do you choose?

To bulk load data into Amazon Neputn, what do you do?

You need to create a pub/sub server. Which databse do you use?

You want to connect a DynamoDb stream to an AWS lamdba function. Which one of these object do you create.