How to make an erd with 'spesific' requirements? - data-modeling

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

Related

E-R diagram task - feedback wanted

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?

CakePHP: Private Training/Course 101? Any suggestions

I know that this question is not directly related to programming in CakePHP, so I apologies in advance for that.
Is there a website/organization where I can pay for a 101 training in CakePHP with an experienced programmer who can take me from the very basics and lead through the development my first application. Teach me best practices, answering questions, offering guidance etc. Kind of like a supervisor/mentor over my work.
Please do not answer with: ‘Read the CakePHP book’ because… I am doing that, but still I have many other questions related to programing.
CakeDC does CakePHP training:
http://www.cakedc.com/training
"Additionally, if you'd prefer to have a more tailored training session
for you or your team we can provide specific training sessions as part
of our consultancy services. Please contact us for more information."
Update:
I contacted them awhile back with an inquiry to training our team, and never heard back. Not sure if they're no longer doing it, or what.

Android answer database

I am pretty new in this game so please do not judge me harshly.
So I need to build a question/answer database for an app.
The idea is simple:
User types a question and if I have an answer in my database, it gives an answer. If I do not have an answer, it goes for my manual moderation, so I can add new answers for the future.
I do not know if someone has already build a software like this and I can just buy one, or do I have to hire someone to build one from the ground. Which language should I use? Which software?
I know that Java, C++ and SQL are most popular languages for that type of jobs, but are they the best solution or there are better languages?
I need a database that can hold a really huge amount of data.
I would really appreciate any help guys!
and if any of you can build me this database, I do not mind to hire a freelancer.
Thank you!
Best Regards,
Ayazhan.
Yes you can do it.
if you have some knowledge in SQl then you can make an local Db in your app and consume it according to requirement. The simple question and answer app contains set of predefined questions.
The above link will help you to develop this app.

General Advice - Robotics / AI

This is not for asking any doubts or queries. I know this is a technical forum and hence would be the best platform for me to get advice on.
I am a Master's student in computer engineering and hold interest in Robotics. I am confused as to where should I start if from. I have 2 courses one is on controlling of robots and other is based on introduction to AI. I don't want to take both the courses together. I am confused as to do I need to go for controlling of robots first or AI first?
Also, if you know any good forums/blogs on AI then please share... Would be a lot helpful.
Thanks.
AI and robot control are different subjects, and do not necesssarily cross over that much. AI covers writing software that is intelligent, and applies to things as disperate as character recognition in scanned text, stock market analysis and face detection. There are uses of AI techniques with mobile and manipulator robotics, but there are lots of good robot projects out there that are implemented with zero AI.
Your control course for robotics will likely cover the basics of kinematics and dynamics of robots, path planning, and cover a fair bit of practical robotics knowledge. All of this course is important knowlege for building and controlling robots, and if robotics is your goal destination then i would take this course. You can do good work in the robotics field with zero knowlege of AI, but you cant with zero knowlege of robot control.
Well, I would take the AI class first, because I would want to know more about the logic before going to the control part.
As far as forums go, you could check out the AI Forum, and the AI Depot (the AI Depot is not exactly a forum, but it has some good resources and articles).
You can also check out these Area51 StackExchange site proposals:
Cognitive Science
Robotics Research
Machine Learning

any practices ,samples for ERD?

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.

Resources