24
votes
5answers
2k views

Is it OK to keep a value which updates in a table?

We are developing a platform for prepaid cards, which basically holds data about cards and their balance, payments, etc. Up until now we had a Card entity which has a collection of Account entity, ...
0
votes
1answer
194 views

Connecting to a SQL Server database from a Flash program

I currently have the ability to utilize Microsoft SQL Server 2012. I am developing a project with Adobe Flash Builder 4.7. If I link my database with Adobe Flash Builder is there any additional ...
3
votes
1answer
285 views

Surrogate key / Primary key: Better to use an existing unique data field or create a key field?

I am not sure if this question has been asked or not. At least I couldn't find it. I am curious about a primary key in terms of efficiency with data searching and retrieval. This is a hypothetical ...
0
votes
0answers
85 views

recommend some good books on DATABASE MANAGEMENT SYSTEMS [closed]

Can anyone please recommend some good books on DATABASE MANAGEMENT SYSTEMS.