Can you advice me please on a "free" language and database that I can use to create a standalone application e.g. simple HR application w/ (forms,reports and queries) that I can copy and use in my flash memory ?
Almost any language will work. And most languages these days are free both as in beer and as in liberty. As for the database, definitely SQLite: http://www.sqlite.org/
Mono + C# + SQLLite
Related
I am a network administrator, former software engineer also.
I want to build my own program to keep track the IP, equipment and etc. Since our company has only only less than
100 equipments (including PCs, Printers), the data to process is small, can anyone suggest which language and platform suit my needs best ?
Hmm.. if it were me, I would do a mix of PHP and MySQL for the data backend (CRUD Operations) with HTML, CSS, and JavaScript for the front end UI. This would require Apache, MySQL, and PHP to be installed. These are available to any platform (Windows, OSX, Linux, etc.)
If its local for your use, just create an Access Database.
If web based, this is a fast and simple way ... xml based CRUD
I have a plan to create a desktop app (language not chosen yet) that will be used as an admin part to manipulate data. At the same time the database will be used for a website.
My only concern is -- I may mix up technologies that aren't compatible, but the only thing that ties them together is the database.
Say I will use Delphi to create the desktop app to manage an Access or MSSQL/MYSQL (if possible) and then use php as to make the web.
Can there be obvious problems with this idea that I am blind to right now?
Any other ideas suggestions are greatly appreciated.
Databases have to be one of the most common ways I see two languages communicating/cooperating. I've seen databases as a conduit between C/C++, Java, Perl, Python, C#, etc... Databases have the benefit of storing data in a pretty language agnostic way. Almost all languages have a way to talk to a database.
The main downside of using two different languages is that you won't be able to reuse code between your web project and your desktop project. That may sound fine, but every time you update your DB schema, you have to update the two code bases. Not a deal-breaker, but annoying nonetheless.
I would recommend avoiding Access if you could help it. Access works for a simple desktop application, but once you start introducing multiple users, you should go with something a little more robust (and secure). Go with something like SQL Server Compact or SQLite if you need a file database. I personally would bite the bullet and go right for MySQL.
As stated in the title, I would like to know if it's safe to develop a website using one of the actuals "omg" platforms that are Node.js and Ringo.js at their actual version.
Also, I would like to know if they support cookies/sessions and how do they deals with multi-fields post (fieldname[] in PHP).
Thank you
--Edit--
Thanks for all the links guys.
What can you tell me about Ringojs ?
Since I haven't figured which platform to start playing with. I must admit that the fact it can use Java seamlessly really impress me. The only available XSLT 2.0 library is in Java. I could use it as a templating system.
Is there anyone who had the chance to play with Ringojs?
From my experience using both, Ringo is more stable and "safer" for production use but you can comfortably deploy both. In addition to the ability to wrap existing Java libraries that you mention, you also get the benefit of being able to run it in an existing webapp container which manages the lifecycle of the application for you and ensures its availability.
That being said, it doesn't have to be an either or decision. By using my common-node package and assuming you don't use any Java libraries, it's perfectly feasible to maintain a project that runs on both without any changes to the code.
I've also included benchmarks that test the performance of Node.js vs. RingoJS the results of which you can find in the common-node/README.md. To summarize: RingoJS has slightly lower throughput than Node.js, but much lower variance in response times while using six times the RAM with default Java settings. The latter can be tweaked and brought down to as little as twice the memory usage of Node with e.g. my ringo-sunserver but at the expense of decreased performance.
Node.js is stable, so yes it's safe to use. Node.js is capable of handling cookies, sessions, and multiple fields but are not as easy to manage. Web frameworks solve this problem.
I recommend Express.js, it's an open-source web framework for Node.js which handles all of this and more.
You can download it here:
https://github.com/visionmedia/express
I hope this helped!
Examples of some of the bigger sites running Node.js
https://www.learnboost.com/
http://ge.tt/
https://gomockingbird.com/
https://secured.milewise.com/
http://voxer.com/
https://www.yammer.com/
http://cloud9ide.com/
http://beta.etherpad.org/
http://loggly.com/
http://wordsquared.com/
Yes. It is. https://github.com/joyent/node/wiki/Projects,-Applications,-and-Companies-Using-Node and https://github.com/joyent/node/wiki/modules
cookies/sessions/forms etc http://expressjs.com/ makes it easier
Ringojs is a framework developed by Hannes Wallnöver and uses rhino as it's scripting framework. There are webframeworks, templating-engines, orm-packages and many many more things already available. Have a look at the tutorial featuring a good subset of packages you may use for a simple web-application. It's not too long and straightforward.
Even thought some of those packages used within the tutorial (e.g. ringo-sqlstore]) are marked as 0.8 and come with the hint "consider this being beta" they are already very stable and bugs - if you find one - get fixed or commented on very fast.
And the power of uncountable java-libraries out there is at your fingertips - so if you already have java-knowledge this knowledge isn't wasted. Rhino - the scripting-engine - even enables you to implement interfaces and extend classes. It is possible a little more advanced but i've done it and i know of packages taking advantage of such features (like ringo-ftpserver which is a wrapper around Apache FtpServer written in java)
Another pro for me is - because ringojs is based on java - it works fairly well with multithreading with ringo/worker for example.
We're building a MMO server, highly optimized for latency.
So, with the CLR 4.0 and with introduced new workstation GC, is it now possible to use Background Garbage collection on a Windows Server?
Apparently not. See this article, which specifically states that Microsoft is not offering background GC for server GC in V4.0 (though it looks like this is under consideration).
You might also find this essay (PDF) interesting, given what you're trying to do.
When I'm in Windows, I use the excellent MicroOLAP Database Designer for PostgreSQL, but its not open source or multiplataform.
Do you know or can recommend me an alternative to this software, that I can use in Linux?
EDIT: Just to clarify, I don't want to use wine to emulate MicroOlap for PostgreSQL, it doesn't work too well, I would prefer something native, or Java based.
pgDesigner is a database design application for PostgreSQL, for
versions 7.x and 8.x.
pgDesigner provides the following features:
Complete datamodel editor
Support for PostgreSQL objects: tables, views, relations,
tablespaces, procedures, triggers, types, domains and sequences
Automatic updating of relations between tables.
Wizard for the construction of views.
Report generator, with statistics
Printing the diagram
SQL export
Creation of the database
Management of the project on a diagram chart
I stopped using software database designers years ago, and reverted back to the trusty pen and paper which is just easier to use in my experience.
To answer your question though, take a look at dbDesigner4 which is what I used to use. I remember it being fantastic. It's open source and multiplatform.
How about Clay? It's a plugin for Eclipse, and the free version supports generating Postgres DDL.
I really like dbWrench. It's commercial as well, but not expensive and is Java based. It can reverse engineer a database and generates pretty good HTML based documentation.
http://www.dbwrench.com/
This is a crappy answer for which I should be taken out and shot, but you can search over nearly all PostgreSQL related projects at PgFoundry. I don't know from GUI database design tools, but I'd imagine you should be able to find something there, if it exists.