Tables, Items, and Attributes - Amazon DynamoDB Core Concepts | Amazon Web Services

[@mujahid509]

Was the best and simplest explanation I could find about the PK,SK and how data is stored on DynamoDB..Loved it..Thanks for the video..Looking for more.

[@amazonwebservices]

It's our pleasure!😃 Really glad you loved it & found it insightful! 🙌 🤩

[@FilDoyon]

Thank you so much , I'm currently following the learning path on AWS skill builder to pass my AWS Developer Associate Certification exam, but the course I'm doing right now in Skill Builder is a mess.... only text.... hours and hours of text... you can't even imagine. I was looking for a video to explain the terminology and concepts of DynamoDB and you totally nailed it man!! Thanks so much, this is now clear for me and I now understand what the messy and really badly done AWS courses was trying to explain to me.

[@awssupport]

So glad to hear you enjoyed this content, Fil. Best of luck on your certification exam! 🎉 ^RN

[@BeABetterDev]

Thanks Kirk!

[@martyoneill3468]

no worries !

[@neviswarren]

Excellent overview. Thank you.

[@amazonwebservices]

It's our pleasure! 😀

[@Aki-ev6zk]

Really great explanation!

[@amazonwebservices]

Thanks! 🙌

[@farmersneed]

Lovely explanation. Thank you very much.

[@amazonwebservices]

Glad you liked it! 😍 🤝 ☁️

[@Razdvatrichetyre5754]

Thank you very much for the video!

[@NoSQLKnowHow]

You're very welcome!

[@SqlWithPrashant]

Hi how i can filter a nested map data , any practical demo

[@Oscar-vd4cv]

Thanks, this is really good

[@awssupport]

Thanks for that feedback, Oscar. 😊 Glad you enjoyed the video. ❤️ ^KS

[@agustinillescas]

nice

[@isaquemoura7759]

hint -> the english speaking would be a litte bit slow and clear, to make it ieasier to non-native english speakers .

[@ducthinh2412]

You can change the playback speed to .75 of .5

[@ogcontraband]

DnyamoDB is the weakest thing ever, even storage blobs are better. First there is no way to sort unless you want to sort by the key - you have to pull back every record and sort on the client browser. I'm pissed there is no way to add a 'column' once records are written. I'm about to delete all players data so I can add more features. I now wish I would have just made it a key and 'json' string field that would have been better at least I could add attributes

[@awssupport]

Thanks for bringing this to our attention! 👍We've submitted your feedback to the DynamoDB team. We're always looking to improve, so please share your thoughts and comments with us: go.aws/feedback. 📣 ^RW

[@awssupport]

Thanks for your patience while I worked on this for you! 😊 I reached out to our Service team and they advised that the best way to get all the details on your request would be via a Support case. You can open one here: go.aws/support-center. You can also share feedback with us here: go.aws/feedback. 📣 ^RW

[@tommyls4357]

Sorry to say, but explaining difficult concepts in a way that a newbie can understand is a skill, which this person lacks. The whole example about using inventory and weapons was hard to follow. Maybe presenter is a gamer himself, so he knows what's going on. But it went over my head.

[@kddllkzkdkdk4820]

Hey Tommy! I will not swear on it but he mentioned that he uses double colons because nothing else uses it. So for me it sounds like it’s done to distinguish things easier. So you know like partition key that armour and weapons share the same parent “inventory”. In C++ you use double colons to access the class definitions method. As I mentioned above I will not swear on it. Although I will suggest that in the near future when you encounter such situation again, it would be more beneficent to both you and the teacher to present your obstacles in a clear way. Perhaps there are more people struggling with this concept and would be appreciated by them if you bring it up. Also, your opinion is quite subjective and one cannot demand that everyone can please your way of learning. Sincerely, Dani

[@NoSQLKnowHow]

@tommyls4357 Sorry, you feel this way. I was trying to show with the inventory the concepts that I had gone over prior to that, but in a more concrete way. The inventory could have been anything, really. Groceries, clothing, whatever. What I wanted to show specifically was a one-to-many relationship in DynamoDB, that all of the inventory related to the one user, and could be done in a very scalable way in DynamoDB. That the answers to the questions commonly asked are pre-computed to what was needed in the game example.

[@NoSQLKnowHow]

@@kddllkzkdkdk4820 Yes, the double colon is a delineator. Therefore in the DynamoDB API, I could in my app concatenate strings, delineated by the double colon, to piece together the partition key or sort key of the item and therefore not have to SCAN for what I am looking for. I want to pull back just the information the app needs, when it needs it, and nothing more so I am not wasting bytes considering how DynamoDB charges for data. It is super efficient this way, both in terms of performance and in cost. With the DDB API, I could use the QUERY operation and a begins_with() to get just the items I needed "object_type1::sub_object_type::more_data" Therefore I could get all objects that begin with "object_type1::sub_object_type::" that are assigned to user XYZ and this scales REALLY well in DynamoDB.