im a new student of computer science and i got this database modelling course,
on my last course my lecturer explain me about basic erd modelling such as relation,entities,chen and crowsfoot notation
and i got a task that tell me to make an erd about train booking with some spesific requirements, here's the requirement
requirements
and here's what i've made from what i know from my last course
my work
im stuck about the requirements, im very glad if someone can help/explain me about how to make an erd with that requirements, Thanks
I'm revising for uni using mock questions and I'm wondering where I could find materials or information to answer this question or if someone could walk me through it?
Thanks
Ever hear of the "2-Phase Commit" algorithm? That's how they do it. Incidentally, I met the guy who has the patent on "2-Phase Commit"; he's an old-timer like me :).
Doing practise exam questions. Was just looking for some feedback on my attempt at this task. Do you think this caters for what it's asking for, is it missing anything?
I'm looking to get a deeper knowledge of drools, and I was wondering if CLIPS skills and knowledge would be transferable to drools?
In particular, I'm wondering if the following book would help on the quest of getting a deeper knowledge of some of the principles behind drools?
Intelligent Systems: Principles, Paradigms and Pragmatics: Principles?
Note: this question is answered by the comments in the selected answer.
There are several DROOLS books available on Amazon including two published this year (2013).
Q:
I want any web sites or books just for training on ERD and normalization. I want a lot of sample, practices, and case studies with recommended answers, to strengthen my skill in database design and avoid the poor database designs I've made.
Note: I don't need books to explain the concepts, what I need is practices, examples, and case studies with recommended answers.
Thanks in advance.
I would consider Object Role Modelling over ERM using NORMA or some such.
There is small group on linkedin about ORM, as well a short discussion over on dbaspot.
For normalization, I'd start with Wikipedia and then search
Database Design Using Entity-Relationship Diagram by Sikha Bagui and Richard Earp should be a good starting point.
The Database Management System lecture series, published by the Indian Institute of Technology (IIT), is another good resource.
I think the Database Programmer blog is worth reading. It's got some nice stuff on normalization, but I'm sure any tutorial that Google brought back would be sufficient.