Questions tagged with Amazon Quantum Ledger Database
Amazon Quantum Ledger Database (QLDB) is a fully managed ledger database that provides a transparent, immutable, and cryptographically verifiable transaction log.
Content language: English
Filter questions
Select tags to filter
Sort by
Sort by most recent
Browse through the questions and answers listed below or filter and sort to narrow down your results.
18 results
I am planning to use QLDB as registries of data integrity and verifiability.
If I have 1 journal, and I am planning to use the journal for different groups, in which each group has its members.
Let ...
Accepted AnswerAmazon Quantum Ledger Database
2
answers
0
votes
271
views
asked 2 years ago
I've created an [issue (#216)](https://github.com/awslabs/amazon-qldb-driver-java/issues/216) on the GitHub repository requesting an update to its AWS SDK dependencies, however, it seems like it hasn'...
0
answers
0
votes
176
views
asked 2 years ago
When I run an `UPDATE-SET` statement against one of my documents in QLDB using this statement:
```sql
UPDATE Documents SET author = 'jkrowling', channel = 'dstv' WHERE docIdExt = 'newDocId'
```
The ...
0
answers
0
votes
168
views
asked 2 years ago
The integer type in QLDB is defined as...
https://docs.aws.amazon.com/qldb/latest/developerguide/ql-reference.data-types.html
int Signed integers of arbitrary size
....arbitrary size....but running...
1
answers
0
votes
312
views
asked 2 years ago
I am commiting several updates to several documents within one transaction. I use the transaction id to the request those documents which have been updated.
If I commit an update with 3 changes to a...
1
answers
0
votes
802
views
asked 3 years ago
We have a table T with two indexed fields A and B. When we query the table using the following query, QLDB does a full table scan (by evidence of the IO stats and latency):
```
select * from T where ...
1
answers
1
votes
471
views
asked 3 years ago
So considering this post https://aws.amazon.com/blogs/industries/building-a-core-banking-system-with-amazon-quantum-ledger-database/
- We are processing a realtime transaction (means that user swiped...
0
answers
0
votes
262
views
asked 3 years ago
We are trying to create new ledgers in QLDB (Quantum Ledger Database) from a lambda within a vpc without internet access however the request is bouncing due to there not being a VPC endpoint for the m...
1
answers
1
votes
560
views
asked 3 years ago
Hello,
I'm trying perform connect to `AWS QLDB` using Django project
However, I get an issue, once I add the following code
`from pyqldb.driver.qldb_driver import QldbDriver`
I get the issue
` Im...
2
answers
0
votes
556
views
asked 3 years ago
Hello,
Currently, I'm trying to build the finance/trading system based on QLDB.
I want to go deeper into this topic.
May I ask you if you have some AWS books/guides/courses/best practices (if I can...
1
answers
0
votes
757
views
asked 3 years ago
Dear Experts,
Our use of the QLDN is programmatic via API endpoints, all CRUD Operations are done via the deployed API endpoint.
Please we have a situation where we believe adding more fields in the ...
1
answers
0
votes
536
views
asked 4 years ago
I created a QLDB stream with console
But the record data contains unreadable characters
And it doesn't look like it is in JSON format
![Unreadable records](/media/postImages/original/IMi7qOHjsZSku-...
1
answers
0
votes
661
views
asked 4 years ago