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• cross-platform frameworks for storage + metadata?

  - by Jason S

  I don't quite know what to use for terminology, so bear with me... Are there any cross-platform frameworks out there that facilitate a kind of "virtual file storage" to encapsulate adding files along with a database of metadata? I'm thinking about something along the lines of iTunes or iPhoto, where the program manages a whole bunch of files (in those cases audio or image files) and has a database of metadata so you can organize/find those files easily. I'd like to cobble together something along those lines for files in general. edit: I am hesitant to store files in a database alone, e.g. MySQL, as there would be potentially tens of gigabytes in my application (this issue has been mentioned in several SO posts, see this one that gives several links to others). I'm looking at CouchDB though and maybe it has promise....

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• How to integrate access control with my ORM in a .net windows form application?

  - by Ying

  I am developing a general database query tools, a .Net 3.5 Windows Form application. In order to make the presentation layer is independent of the database layer. I use an ORM framework, XPO from DevExpress. But, I have no access control function built in. I surfed Internet and I found in WCF Data Services, there is an interesting concept, Interceptor, which is following AOP(Aspect Oriented Programming). I am wondering who has such an experience to build access control in ORM. My basic requirement is : It should be a general method and controlled by users in runtime. So any hard coding is not acceptable. It could be based on attribute, database table, or even an external assembly. I am willing to buy a ready solution. According to the idea of AOP, an access control function can be integrated with existing functions easily and nearly not knowingly to the previous developer;) Any suggestions are welcome.

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• Must read resources for NoSQL developers.

  - by Little Jeans

  Can you recommend any resources every NoSQL developer should be familiar with?

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• Is it normal for a software developer to have lots of issues after product went live?

  - by juniordeveloper87

  In recent months, our product (which went live probably 9 months ago) experience an increase in the number of users using it. We faced lots of queries, problems, and complaints from users. Sadly, it seems that a lot of the issues seem to be coming from a module that I have been working on. At times, I wonder if I am incompetent, or is this pretty normal in software development, that bugs are found especially during the initial stages of a software development livecycle after it goes live? I wonder why some issues we faced now are not foreseen by me or the team during development phase. I have been working as a software developer for close to 2 years now. Hope to get your opinions, feedback, advices! Thanks!

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• Magento coupon entities in database

  - by koramaiku

  I'm trying to develop a Magento plugin which involves using coupons. Apparently after looking around I found I found a source that mentions use of a 'salesrule' table for coupons. However when I looked at my database i couldn't find it. However I did find 3 tables that had mention 'coupon' called 'coupon_aggregated', 'coupon_aggregated_order', and 'coupon_aggregated_updated'. I just wanted to know what is the difference between the 3 tables so I can start using them? I am on the latest version of Magento. Thanks guys in advance.

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• Problem saving Text file in database using Hibernate

  - by Marquinio

  I'm having a problem saving large text files to MySQL database. If the text file size is around 5KB it successfully saves. If file is 148KB then I get this error from Hibernate: org.hibernate.exception.DataException: Could not execute JDBC batch update These is the SQL shows by Hibernate: Hibernate: insert into file_table (ID,FILE) values (?, ?) And in my hibernate file I'm using java.sql.Blob to store the file. Anyone knows why it fails to save a file size of 148KB but if I open that same file, cut it down to around 5KB, it will successfully save it? I thought the default limit was I think 2GB? This is weird. Thanks.

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• Make a usable Join relationship with LINQ on top of a database CSV design error

  - by jdk

  I'm looking for a way to fix and/or abstract away a comma-separated values (CSV) list in a database field in order to reconstruct a usable relationship such that I can properly join the two tables below and query them using LINQ and its Join method. Following is a sample showing the Person table and CsvArticleIds field having a CSV value to represent a one-to-many association with Article records. TABLE [dbo].[Person] Id Name CsvArticleIds -- ---------- -------- 1 Joe "15,22" 5 Ed "22" 10 Arnie "8,15,22" ^^^(Of course a link table should have been created; nonetheless the relationship with articles is trapped inside that list of CSV values.) TABLE [dbo].[Article] Id Title -- ---------- 8 Beginning C# 15 A Historic look at Programming in the 90s 22 Gardening in January Additional Info the fix can be at any level: C#.NET or SQL Server something easy because I will be repeating the solution for many other CSV values in other tables. Elegant is nice too. not looking for efficiency because this is part of a one-time data migration task and can take as long as it wants to run.

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• How can I set my deployment options to script the incremental release of a Visual Studio 2010 databa

  - by littlechris

  I've just started using a VS2010 database project to manage the release of an update to an existing database. I want the deployment option to generate a script that will contain the commands to change my existing database rather than create an entirely new one. E.g I have 10 existing tables - one of which I drop in the new version and I create some new sprocs. I only want the deploy to script the Drop table and Create Procedure commands. I am using VS2010 Premium. Thanks!

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• Developer Deep Dive into Oracle WebLogic Server 12c (Dec. 1)

  - by oracletechnet

  It is not often that we are compelled to direct you toward a product launch event. But this one is special. On Dec. 1, Oracle will launch (via live Webcast) Oracle WebLogic Server 12c, a major update to that product. And this release, which includes Java EE 6 support, Active GridLink for Oracle RAC, and Oracle Virtual Assembly Builder, among other things, is specifically designed to improve the process of deploying apps to the cloud. Even better: the Dec. 1 Webcast includes an hour-long, developer-focused deep-dive session in which product experts will answer your questions via live chat. (Register for this session separately.) You don't want to miss this one, folks! 

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• update iphone application behaviour

  - by Jim

  Hi, I developed one database related application for iPhone device(SQlite database). Now i want to update that application with more features(I want to push an update for the same application). Here i am more concerned about the user data while pushing the update so my question is if i will push an update then does the update will clear all the data that is stored in .sqlite file? if this is case then how to push application update without modifying the previous data in the database file? Please suggest. Thanks, Jim.

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• How to localize static content in database with Django

  - by man with python

  My app has tables for languages and countries (actually django-countries at the moment, but open for suggestions). The tables are populated when I initialize the database and remain static after that. What would be the ideal localization mechanism for the contents of these tables, so that I can show the country and language names to users in their chosen site language? I'm aware of projects like django-multilingual and transdb, but IMO they are more suitable for dynamic content, i.e. stuff that's supposed to be modified. Please englighten me!

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• How to limit the number of connections to a SQL Server server from my tomcat deployed java applicati

  - by CJ

  I have an application that is deployed on tomcat on server A and sends queries to a huge variety of SQL Server databases on an server B. I am concerned that my application could overload this SQL Server database server and would like some way to preventing it making requests to connect to any database on that server if some arbitrary number of connections were already in existence and unclosed. I am looking at using connection pooling but am under the impression that this will only pool connections to a specific database on the SQL Server server, I want to control the total of these combined connections that will occur to many different databases (incidentally I can only find out the names of individual db's dynamically as they change day to day). Will connection pooling take care of this for me, are am I looking at this from the wrong perspective? I have no access to the configuration of the SQL Server server. Links to tutorials or working examples of your suggested solution are most welcome!

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• how do i update database using ADODB.Recordset?

  - by every_answer_gets_a_point

  i am using excel to connect to a mysql database: Dim dpath, atime, rtime, lcalib, aname, rname, bstate, instrument As String Dim rs As ADODB.Recordset Set rs = New ADODB.Recordset ConnectDB With wsBooks rs.Open "batchinfo", oConn, adOpenKeyset, adLockOptimistic, adCmdTable Worksheets.Item("Report 1").Select dpath = Trim(Range("B2").Text) atime = Trim(Range("B3").Text) rtime = Trim(Range("B4").Text) lcalib = Trim(Range("B5").Text) aname = Trim(Range("B6").Text) rname = Trim(Range("B7").Text) bstate = Trim(Range("B8").Text) ' instrument = GetInstrFromXML(wbBook.FullName) With rs .AddNew ' create a new record ' add values to each field in the record .Fields("datapath") = dpath .Fields("analysistime") = atime .Fields("reporttime") = rtime .Fields("lastcalib") = lcalib .Fields("analystname") = aname .Fields("reportname") = rname .Fields("batchstate") = "bstate" .Fields("instrument") = "NA" .Update ' stores the new record End With what is the next step? how do i do an rs.execute?

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• Asynchronous database update in Django?

  - by Mark

  I have a big form on my site. When the users fill it out and submit it, most of the data just gets dumped to the database, and then they get redirected to a new page. However, I'd also like to use the data to query another site, and then parse the results. That might take a bit longer. It's not essential that the user sees these results right away, so I was wondering if it's possible to asynchronously call a function that will handle this, and then return an HttpResponse from my view like usual without making them wait? If so... how? Any particular libraries I should look at?

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• How can I build a list of world geo locations and their relative geographical hierarchies?

  - by Nathan Ridley

  I want to build a database of geographical locations and would like to be able to identify locations that fall inside other locations. For example, The Empire State Building is going to have one geo-coordinate, but my database would be able to tell me that it falls inside Manhattan, which falls inside New York City, which is in the state of New York and so forth. I've been looking at OpenStreetMap which seems to have a pretty decent database but as best I can tell, I would need to create a set of polygon structures representing each region and then detect if a coordinate falls inside a given region's polygon. Is there a better way to do this, or is there a data source where all of this has already been calculated?

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• Sort database entries via a dropdown list

  - by Lin

  Hello! I'm curious if anyone could possibly help me, because I can't find anything exactly related to it anywhere, and it's driving me nuts. I'd like to have a dropdown list on a page, that will give the visitor the option to sort all entries by year. I have entries from i.e. 2001, 2005, 2009, 2010. The years should be displayed in the dropdown, so the visitor can easily just select all entries dated 2001 if they want. The year for each entry is located in the one database table I have. In other words, I simply want a "sort by" dropdown that you can see on pretty much any shopping site nowadays. But with set years. Thanks in advance for any replies!

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• Update query for Access Database for certain Parameters

  - by nitinkhanna

  Hi, I am using MS Access as a database and using c#, .net for updating some records in it. But it is giving error saying "No value given for one or more required parameters." There are 5 colums in Table and I want to update only 2, for that I have written the query like "update User_DTL set user_role_id = '" + _UserRole + "', auth_id ='" + _authId + "'" + " WHERE Id = '" + _Id + "' "; where _UserRole, _authId, _Id are strings. What may be the error. Do I need to give every parameter in update statement or there is some other way. Thanks

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• Unable to open executable - xcode

  - by Filipe Mota

  I'm getting this error...any idea how to solve it? GenerateDSYMFile /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app.dSYM /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app/PBTest cd /Users/fmota/Documents/Developer/Protobuf/PBTest setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/usr/bin/dsymutil /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app/PBTest -o /Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app.dSYM error: unable to open executable '/Users/fmota/Library/Developer/Xcode/DerivedData/PBTest-gvudadeakgzklbekugyiqyfyprlt/Build/Products/Debug-iphonesimulator/PBTest.app/PBTest'

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• What are some tasks you might ask a potential ruby developer hire to complete?

  - by opensourcechris

  I would like to start a career path as a developer. As my first Language I chose Ruby to learn. What are some types of coding I might be asked to do as part of an evaluation at a potential employer? For example on my interview... Employer: "So, you think you can be a programer!" Me: "Why yes sir, I believe I would be a fitting addition to your team" Employer: "Well that remains to be seen! To demonstrate your basic knowledge please code insert evaluation project here What would you have me do to demonstrate my skills?

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• Tool to generated rotated versions of an image

  - by John

  In sprite-based systems, it's common to fake rotation of a sprite by having many different images, each showing it rotated an extra few degrees. Is there any free tool which will take a single image, and output a single image containing several rotations? It should also ideally let us control how many images are in each row. e.g if I have a 32x32 sprite and I want it rotated at 10 degree intervals, the tool might generate a 320x32 file or a 160x64 file

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• ProgressBar while transferring data from Excel sheet to SQL database table

  - by Sagar patel

  Can anyone tell me how to show animated progress bar while the data from an Excel sheet to a SQL database table is being transfered? I have a form in .aspx page. In that form, there is one FileUpload control that uploads an Excel file. While uploading that file and saving it on the server at the same time I'm transferring the data from the Excel sheet to a SQL table. During this transfer, I want to show a ProgressBar and after transferring all data it will be removed automatically.. Is there something I can do to achieve this?

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• Showing an image after loading it from sql database

  - by user330075

  I have a problem showing the image form database in a view Details and a ImageController. Inside the view I have: img src=Url.Action("GetFile","Image", new {id= Model.id}) and in controller: public FileContentResult GetFile(int idl) { //int idl = 32; SqlDataReader rdr; byte[] fileContent = null; ........... return File(,,); } When the view is called, function GetFile it just won't work. But if I cut out the parameter int id1 and I instantiate it as a variable it does work. public FileContentResult GetFile() { int idl = 32; SqlDataReader rdr; byte[] fileContent = null; ........... return File(,,); } Why?

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• Sqlite database entries pass to array list?

  - by Rjay Guillermo Baltazar

  This is my code in getting the question into SQLite Database . I want to pass the questions into array list ? is it possible to my code ? Thanks for your help . public String getquestions() { // TODO Auto-generated method stub String[] sqlSelect = { "0 _id", "question", "answer" }; String sqlTables = "mytables"; SQLiteDatabase db = getWritableDatabase(); SQLiteQueryBuilder qb = new SQLiteQueryBuilder(); qb.setTables(sqlTables); String result = ""; c = qb.query(db, sqlSelect, null, null, null, null, null); int id = c.getColumnIndex(ID); int question = c.getColumnIndex(ROW1); int answer = c.getColumnIndex(ROW2); c.moveToFirst(); result = result + c.getString(question) + c.getString(count); return result; }

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• Turn database result into array

  - by Industrial

  Hi everyone, I have just made the update/add/delete part for the "Closure table" way of organizing query hierarchical data that are shown on page 70 in this slideshare: http://www.slideshare.net/billkarwin/sql-antipatterns-strike-back My database looks like this: Table Categories: ID Name 1 Top value 2 Sub value1 Table CategoryTree: child parent 1 1 2 2 2 1 However, I have a bit of an issue getting the full tree back as an multidimensional array from a single query. Here's what I would like to get back: array ( 'topvalue' = array ( 'Subvalue', 'Subvalue2', 'Subvalue3' = array ('Subvalue 1', 'Subvalue 2', 'Subvalue 3' ) ); ); Update: Found this link, but I still have a hard time to convert it into an array: http://karwin.blogspot.com/2010/03/rendering-trees-with-closure-tables.html

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• Hibernate database connection configuration

  - by Alvin

  We have 2 different server environments using the same Hibernate configuration. One server has JNDI support for datasource, but the other does not. Currently the Hibernate configuration is configured to use JNDI, which is causing problem on the server that does not support JNDI. I have also tried to put the direct JDBC configuration together with JNDI configuration into the configuration file, but it looks like hibernate always favors JNDI over direct JDBC configuration if both exist. My question is, will it be the same if both JNDI and connection_provider configuration both exists? Will Hibernate still use JNDI over connection_provider? Or is there any way to change the precedence of the database connection property? I do not have access to the server all the time, so I thought I do ask the question before my window of the sever time. Thanks in advance.

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