To index a field that holds an array value in MongoDB, which index type do you create?

You want to test HBASE on your laptop using the fewest number of steps. What do you do?

You need to create a document database that supports database triggers. Which NoSQL database should you use?

What is recommended size for Redis keys?

What does redis use to sort the elements of a sorted set?

You need to change the shard key of an existing MongoDB collection. What do you do?

You need to select a columnstore database that enforce built-in data types. You want to add indexes to improve performance for known workloads. Which do you choose?

You need to select a NoSQL database for heavy aggregate query workloads. Which type do you choose?

You need to create a data store for the catalog for your new ecommerce application. Your company is a startup, so the catalog schema may evolve. Which do you choose?

You need to create a scalable database that supports immutable writes. What do you use?

Which command do you use to add a value to a Redis stream named mystream?