Tagged Questions

0
votes
1answer
54 views

What are some database designs that support lineage tracing?

Environment PostgreSQL 9.1 Java Problem I'll try to illustrate the problem here as simply as possible: I'm trying to record the following relationship: Node 1 => Node 2 => Node 3 Where Node 1 ...
6
votes
5answers
214 views

Storing a re-orderable list in a database

I'm working on a wishlist system, where users can add items to their various wishlists, and I plan to allow users to re-order the items later on. I am not really sure about the best way to go about ...
0
votes
1answer
160 views

Breaking 1NF to model subset constraints. Does this sound sane?

My first question here. Appologize if it is in the wrong forum but this seems pretty conceptual. I am looking at doing something that goes against conventional wisdom and want to get some feedback ...
0
votes
3answers
134 views

Optimal Database design regarding functionality of letting user share posts by other users

I want to implement functionality which let user share posts by other users similar to what Facebook and Google+ share button and twitter retweet. There are 2 choices: 1) I create duplicate copy of ...
4
votes
9answers
4k views

Is there a large bank using Mysql or PostgreSQL? [closed]

I always thought the largest scale of banks use Oracle. However, there is no proof they really use Oracle instead of Mysql or PostgreSQL, nobody knows the secret. Any idea what they really use? Can ...