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Closed 10 years ago.
what is the best DataBase for a mobile java program ? J2ME
Used DB file outside of .jar file of program
best speed in running query
have more SQL propertise Like Curser, trigger and ...
needed low space (under 1 Mb)
Other things that is needed for run a high speed java program on every mobile device that have a little amount of space and low speed prossesor.
I fear this question has no real answer. There are loads of databases you could use and none of us know the problem nearly well enough to give you a solid answer on this issue. There are countless SQL and NoSQL options for storing data. Off the top of my head, I would recommend looking at mobile-nosql and perhaps this thread.
Related
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Closed 9 years ago.
i made an application in Java that needs to acess a database.
For now, im running it in tomcat on my computer and acessing in sql server on my computer too.
I would like to know if there is something free that i can host my application,and save data in a database too.
I mean,running this all out of my computer.
Any suggestions? thnks
Appfog allows you to deploy simple application for free. You have about 100 MB of DB storage space (Full info)
Heroku Gives you one free dyno for your app.
Openshift Has free plan as well. You get 3 gears.
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Closed 9 years ago.
We have a Java EE application that support Oracle, MySQL and SQL Server vendors.
we are using a view model to view the fetched data from DB, also using pagination in the DAO model, and that's working good so far, but now we are working with millions of records like 10 millions, that cause to us a big problem since our application performance issues become very bad. After some investigations we had make we found that the order by in the query cause a big slowness in the DB level, but we still have to use it.
The question is : is there any technique to work with this amount of data with a good performance (response time and memory issues) ?
If you use ORDER BY clause frequently you should create an index on field your are ordering by. It would dramatically increase ordering performance (but of course will slightly slow down insertion).
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Closed 10 years ago.
I was asked this questions in one interview.
Suppose there is a requirement of highly concurrent application e.g. Email application like Gmail where in
say there 100K users accessing the application at the same time.
You are allowed to ask only 3 questions to client which 3 questions will you ask?
Client in this case is company who want the application to get developed. e.g.Google [Disclaimer: Name is
just to give idea. I know what you must be thinking :) ]
I was really confused there can be n number of questions starting with technology, hardware configuration etc. Can some one tell me which can be best suited questions in above case.
SLAs (expected uptime, response times, usage patterns, etc.)
How much can be spent on maintenance (servers/cloud, support)
Expected growth
Budget?
Desired delivery date?
Do you have a pen to sign or will you need one?
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Closed 10 years ago.
I need to build a mass mail application to send around 20 lacs mail per day. I need some suggestions regarding the technology choice between php and java.
Please suggest.
Either would work.
Java is typically good for bigger projects because it is strongly typed and good for collaboration, but a mass mail application might be simple enough to make that unnecessary.
Most people think of it as easier to do web stuff in PHP, so if you want this to live in a website, you might want to use PHP.
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 10 years ago.
I am working on a project where I want an image on a screen to be affected/modified in some way by sensor data coming from Arduino. (That is, maybe when the sensor gets the right reading the image becomes blurred and then unblurred when the sensor no longer has said values.)
I am using Arduino right now, the screen will most likely be my PC connection, so just my monitor for the time being.
What is the most suitable programming language for this task?
Either try Processing or the Arduino C language. It's mostly like ActionScript on some points, but you'll have to read the documentations first because they give a good hardware insight.