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• Database design for heavy timed data logging

  - by user293995

  Hi, I have an application where I receive each data 40.000 rows. I have 5 million rows to handle (500 Mb MySQL 5.0 database). Actually, thoses rows are stored in the same table = slow to update, hard to backup, ... Which king of scheme is used in such application to allow long term accessibility to the datas without problems with too big tables,…

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• ER Data Model - confused by diagram.

  - by Khou

  Hi im a little confused by this diagram http://www.b-eye-network.com/images/content/i030ht0104.gif (Last diagram in the article) 1 - In the "ACCOUNTING ENTRY" table it shows "DebitEntry" and "CreditEntry" i) is this two column or ii) is this two rows of data? or iii) is it two separate tables on its own, Acounting_entry_credit and…

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• VS2010 - How can I get "new MVC item" options to appear in AddItem menu, when project is a Dynamic D

  - by Greg

  Hi I've started with a VS2010 Dynamic Data project, but now I want to add other MVC type pages etc. How can I get "new MVC item" options to appear in AddItem menu? i.e. this seems to appear in an MVC created project, but if I started with a DD project how can I make the option appear

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• Fast data retrieval in MySQL

  - by trojanwarrior3000

  I have a table of users - It contains around millions of rows (user-id is the primary key). I just want to retrieve user-id and their joining date. Using SELECT user-id, joining-date FROM users requires lot of time. Is there a fast way to query/retrieve the same data from this table?

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• Applying data annotation on entity framework auto generated file

  - by mazhar

  I have generated entity framework classes . I want to apply data annotation to the properties there. How would I achieve that?

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• Create a binary indicator matrix in R

  - by Brian Vanover

  I have a list of data indicating attendance to conferences like this: Event Participant ConferenceA John ConferenceA Joe ConferenceA Mary ConferenceB John ConferenceB Ted ConferenceC Jessica I would like to create a binary…

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• Retrieve data using Dynamic Query and Linq to SQL

  - by GigaPr

  Hi I have a really complicated dynamic query that i want to use to retrieve data from the database I am working in .net 3.5 sql server 2008 i created a stored procedure that accepts a varchar(max) as input parameter and does execute (@SqlQuery) it executes but does not return anything I really would like to use LINQ as all…

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• change validate message in data annotation

  - by user276640

  my object has field with data type int. when i put in html form in this textbox letter not number the validator say- The field must be a number. how can i change this messages like this [Required(ErrorMessage = "??????? ????????")] [DisplayName("????????")] public int age { get; set; }

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• data sync from rails with iphone sqlite db

  - by Markus

  Hi all, I'm wondering whether there is a bossibility to export some selected data from my rails mysql db to a other sqlite db. The aim is to send that sqlite file directly to my iPhone application... That way I don't have to do a lot of xml integration in the iPhone app. That seems to be very slow... Markus

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• Does Java need tuples?

  - by Yuval A

  This question got me re-thinking about something that always bothered me: Does Java need tuples? Do you feel the lack of them in your day-to-day work? Do you think tuples would simplify otherwise complex data structures you find yourself implementing?

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• Import/Export HTML5 localStorage data

  - by hamen

  Hi all, I'm working on a simple TODO list app based on localStorage HTML5 feature: http://hamen.github.com/webnotes/ I'm wondering if it's possible to import/export data in some way. How could I provide an "Export note/Import note" feature to make users being able to save their note on their HD and import them in another…

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• How can I Export local datastore data to Production Google App Engine Datastore

  - by Nitin

  Hi I wanted to export my local datastore data to my google appengine application datastore. Is there any direct and short way to do it.

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• Behavior Tree Implementations

  - by Hamza Yerlikaya

  I am looking for behavior tree implementations in any language, I would like to learn more about how they are implemented and used so can roll my own but I could only find one Owyl, unfortunately, it does not contain examples of how it is used. Any one know any other open source ones that I can browse through the code see…

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• Service Layer which can switch between Web Service Layer and Data Access Layer

  - by Blake Blackwell

  I am building an application that will function as a client-server application, and also as a disconnected client application. I will be using WPF (browser app for client-server application). When interacting with the server's database, I will need to connect using WCF web services. When connecting with the localized…

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• Getting Json data into a list view

  - by Rahul Varma

  Hi, I have been searching for a way to get the json data from a URl (for example: http://search.twitter.com/trends.json) and display it in a listview. Couldnt get a perfect example to get it done. Can anyone plz help me out by getting the solution and providing a good example of how to do it...

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• GridView Style based on bound data.

  - by Matthew Jones

  I would like the rows of my GridView to have strikethrough based on a bound data value called IsObsolete. I tried to do this: <RowStyle BackColor="#EFF3FB" Font-Strikeout='<%# Bind('IsObsolete') %>' /> But obviously this doesn't parse. I'd rather not do this in GridView.DataBound(). Any other ideas?

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• Ruby gem to obscure data

  - by Jake

  Anyone know of a gem that will allow you to obscure/sanitize data? Usecase: Download a production database, run some sanitation so that real customers won't get emails, cards charged etc.

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• SQL Bulkcopy using DATA Access block

  - by Sathish

  I am using the below piece of code for SQL Bulk copy using (SqlConnection con = new SqlConnection(strConString)) { con.Open(); SqlBulkCopy sqlBC = new SqlBulkCopy(con); sqlBC.DestinationTableName = "SomeTable"; sqlBC.WriteToServer(dtOppConSummary); } Can anyone provide me the equvalent code using Data access block…

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• T-SQL: Omit/Ignore repetitive data from a specific column

  - by Dsyfa

  Hi, For my question lets consider the following sample table data: ProductID    ProductName    Price   Category …

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• How to Fake a AsyncToken return in ActionScript 3

  - by Brett

  Using Parsley, I have a service that I access through a [Command(selector='list')] public function getRssFeed( msg:RssEvent ):AsyncToken { return service.list() as…

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• Inserting scientific data into open office Calc

  - by finemann

  hello, i have some scientific data that i want to insert into oo.org calc. when i do this, instead of displaying 0.35678 in a cell it displays 0.35 (only the first…

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• Where is cck "number of values" data stored?

  - by calebthorne

  I have a cck field that needs to allow a different number of values depending on the role of the currently logged in user. I'd like to find where the "number of…

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• How to get or set data from ComboBox in DataGridView

  - by mr.octobor

  In C#.net I want to get or set data to ComboBox in each cell of DataGridView What should I do. Thanks.

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• Encyption in DATA access block

  - by Sathish

  I am using enterprise library DATA access block in my application and now i want to Encrypt the connection string and store it in the Config file and consume it…

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• Data Conversion

  - by cre-johnny07

  How do I convert 0.50 to 50 or 0.1429 to 14.29 in sql query? My data type is real.

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