Simple indexing

- [Kirsten] Let's go ahead and bring the data back…into the database.…Since we've removed the collection,…we'll need to import the collection again.…Open your terminal.…If the Mongo client is still running,…go ahead and Control C to quit.…Make sure you're exercise file directory…for this section.…We'll run the Mongo import command again.…If you take a look at the JSON file for this module,…you'll see that another field has been added,…and we'll work with that a bit later.…So mongoimport.…Again, db learning_mongo,…collection tours jsonArray,…file tours.json.…

Great!…Now that we've got the data in the database,…let's start thinking about indexes.…When we were setting up the original numbers collection,…we added a simple index of a single field…to speed the lookups,…and it made a huge difference.…But that was a very simple example,…and we want to make indexes that make sense…for the data we have and the queries we think…people will want to make.…We might want to be able to find…which tours are in a package,…which tours match a query for length and price,…