That was a very well produced video, it covered 85% of everything, but totally skated over data integrity. So, using `now()` the Insert times would be each be slightly different for the same comment/video, and for each of the Updates and Deletes, you ignored that those changes would need to be duplicated on every copy of that data.
@@DataStaxDevs He means that when adding a row, the commentId is not the same in both tables. For me is confusing as well. We have two tables and we would like to refer to the same unique message, the tables should be somehow syncronised. When adding a comment into comments_by_user, it should be added also to comments_by_video. The same should be valid also for updating and deleting. When I delete a comment from a table it should be deleted from the other one as well. I checked the hands-on exercise link and this scenario was fixed. I understand that it is the developer's responsability to ensure the data consistency in both tables.
Let's Say I Have A PC Which Contain Multiple HDD ( HDD01, HDD02, HDD03 & HDD04 ). 1- How i can install Cassandra in each HDD ? ( Simply Install Datastax community edition ). 2- If Previous Question Done & I create keyspace named "University" in each HDD. How i can connect between them ? Note: I'm just taking it simple to understand it very well.
Hey there Clyde. You shouldn't have to enter in any credit at all to get started. Feel free to reach out to me david.gilardi@datastax.com so we can get that cleared up.
You definitely can create a DB with NO credit card. 🙂 If you post the details on dba.stackexchange.com/questions/ask?tags=cassandra, I'd be happy to help you. Cheers! [Erick Ramirez]
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This is awesome content. Please do a similar introduction video for transaction handling with the accord-15.
That was a very well produced video, it covered 85% of everything, but totally skated over data integrity.
So, using `now()` the Insert times would be each be slightly different for the same comment/video, and for each of the Updates and Deletes, you ignored that those changes would need to be duplicated on every copy of that data.
I'm sorry but I'm not sure what you mean. Can you please elaborate? Cheers! -Erick Ramirez
@@DataStaxDevs He means that when adding a row, the commentId is not the same in both tables. For me is confusing as well. We have two tables and we would like to refer to the same unique message, the tables should be somehow syncronised. When adding a comment into comments_by_user, it should be added also to comments_by_video. The same should be valid also for updating and deleting. When I delete a comment from a table it should be deleted from the other one as well. I checked the hands-on exercise link and this scenario was fixed. I understand that it is the developer's responsability to ensure the data consistency in both tables.
Great content!!! Super like!
Glad you liked it! Cheers! 🍻 - Erick Ramirez
ممنون استاد
Finally my wait is over🤩
I want to move data from a cluster to another one. Which is the fastest method? I was thinking about sstableloader...
Let's Say I Have A PC Which Contain Multiple HDD ( HDD01, HDD02, HDD03 & HDD04 ).
1- How i can install Cassandra in each HDD ? ( Simply Install Datastax community edition ).
2- If Previous Question Done & I create keyspace named "University" in each HDD. How i can connect between them ?
Note: I'm just taking it simple to understand it very well.
If you post your question on dba.stackexchange.com/questions/ask?tags=cassandra, I'd be happy to help. Cheers! 🍻 [Erick Ramirez]
Menus have changed and I cannot create a database without a credit card.
Hey there Clyde. You shouldn't have to enter in any credit at all to get started. Feel free to reach out to me david.gilardi@datastax.com so we can get that cleared up.
You definitely can create a DB with NO credit card. 🙂 If you post the details on dba.stackexchange.com/questions/ask?tags=cassandra, I'd be happy to help you. Cheers! [Erick Ramirez]
ID
I_D
So good!