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Hi am new to database programming, am in a project where i need to write data to noSql database currently we choosed Cassandra as our DB.
But its not final i need to come up with a framework or library service where any of application request data from DB, this library should serve it.
I choosed to use the "Hector" framework with that i can able to write to cassandra DB, but requirement is if tommorow we change database my library has to work with new database where we just store data as key-value pair.
Please help me to get solution to this problem.
Thanks.
If you decided to go with Hector, it is recommended to use DataStax Java Driver.
It is built from the very beginning to take advantage of Cassandra's new CQL native protocol. I used Hector in the past and it is too much annoying to use and code in.
DataStax Java Driver: A new face for Cassandra
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I'm new to web developing and I want to make a web where the user fill in a few info and then get an answer from the backend. The info filled in is sent to the backend; the backend then process the info and send the answer back for display.
My question is how can I do it with the simplest possible framework? LAMP and GAE both seem ok to me in the long run, but is there any simpler framework good for my needs? I have also looked into LAMP provider like bitnami, however I can't find the application I need in the list of applications. If needed, I can program in Java.
Thanks! and please let me know if I need to clarify my question. I think what I'm asking is general guidance on setting up such a simple web.
Google AppEngine will work fine for your needs. You will need to program it, and Java works on GAE. Start with Java Tutorial and then gradually add your own server side processing. Of course many other web server platforms are possible, but users of GAE generally consider it to be very capable and easy enough to use. LAMP is likely to take you longer to learn.
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I am looking at implementing ES using logstash and Sql server as my data source. I was initially using river to read data from Sql server but one of the developers in my team recommended looking at using logstash. Can anyone point to a guide on how to get started with logstash & sql server. My goal is to do search using elasticsearch.
Thanks
So far, there is not any Logstash API for reading SQL.
For input API supported, you can visit here to get more information
For my recommendation, you can write a program to read from sql and write to a file. Then use logstash file
API to read from the file. The Logstash website has getting started tutorial. It is easy to learn.
Good Luck
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currently i use db visualiser for connecting the netezza database. can you suggest any otehr alternative (freeware) for the same.
Check out Aginity Netezza Workbench www.aginity.com.
I haven't found anything better than DBVis. Make sure you are using the loaded JDBC drivers for netezza instead of the ODBC data source.
I broke down and got the paid version. very good stuff. You can run multiple query windows and explorers at once.
Other software includes RazorSQL or any number of other softwares like SQLassistant, SQLdeveloper, etc can be setup to run against netezza.
You should try using this project.
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I'm working on an application that I'm going to write with C and i am considering to use a nosql db for storing timeseries data with at most 8 or 9 fields. But in every 5 minutes there will huge write operations such as 2-10 million rows and then there will be reads(but performance is not as crucial in read as in the write operation).
I'm considering to use a NoSQL db here in order to store the data but couldn't decide on which one to use. Couchdb seems to have a stable driver called pillowtalk for C; but Mongo's driver doesn't look as promising as pillowtalk. I'm also open to other suggestions.
What is your recommendation?
For crazy performance contraints you can't beat Tokyo Cabinet: http://fallabs.com/tokyocabinet/
There is also a server component called Tokyo Tyrant which looks really cool.
MongoDB works great with C - there is both a C driver and a C++ driver. The database uses the C++ driver itself for functions like replication (MongoDB is written in C++).
http://www.mongodb.org/display/DOCS/Drivers
Does your project want to support some form of offline data? If so you should probably go with CouchDB since the replication model is designed to support offline data changes and sync.
What about Sqlite? The site is here. The front end to edit/manage the sqlite database is sqliteman.
Hope this helps.
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I´m looking for a unit tests framework for database development. I´m currently developing for SQL Server 2000, 2005 and 2008. Do you know of any good frameworks with similar functionality as JUnit and NUnit?
Perhaps it´s better to ask, what do you use to unit test your stored procedures and user defined functions?
There is TSQLUnit... Link here: http://tsqlunit.sourceforge.net/
I tend to use a data access assembly and test that with NUnit using the idea outlined in
http://weblogs.asp.net/rosherove/articles/dbunittesting.aspx
it uses transactions to rollback changes. This is not a dedicated database approach but is good if you want to test at a higher level than pure database.
It may be worth having a look at http://weblogs.asp.net/rosherove/archive/2004/07/12/180189.aspx
I'm currently using DBUnit in my project. It's quite a good tool to test a database to see if the results you expect are there, but also it can alter the data in a database to predefined values, for example, it will reset a database to the data you were using before the tests, leaving the tables unchanged.
http://dbunit.sourceforge.net/
I've also come across T.S.T. the T-SQL Test Tool
http://tst.codeplex.com/