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  • Content, MetaData and Taxonomy 2 Overview of the Data Layer

    This article is cross-posted from my personal blog. In DotNetNuke version 5.3, we introduced the concept of a centralized Content store, together with the ability to apply Taxonomies (categories) to the content. We have extended this in DNN 5.4 by completing the MetaData API as well as adding Folksonomy (user tags). In this series of blogs I will explain how developers can take advantage of these new features in their own extensions. In the first blog in this series I covered the Taxonomy Manager...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Using Python to traverse a parent-child data set

    - by user132748
    I have a dataset of two columns in a csv file. Th purpose of this dataset is to provide a linking between two different id's if they belong to the same person. e.g (2,3,5 belong to 1) e.g COLA COLB 1 2 ; 1 3 ; 1 5 ; 2 6 ; 3 7 ; 9 10 In the above example 1 is linked to 2,3,5 and 2 is the linked to 6 and 3 is linked to 7. What I am trying to achieve is to identify all records which are linked to 1 directly (2,3,5) or indirectly(6,7) and be able to say that these id's in column B belong to same person in column A and then either dedupe or add a new column to the output file which will have 1 populated for all rows that link to 1 e.g of expected output colA colB GroupField 1 2 1; 1 3 1; 1 5 1 ; 2 6 1 ;3 7 1; 9 10 9; 10 11 9 I am a newbie and so am not sure on how to approach this problem.Appreciate any inputs you'll can provide.

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  • What are the most known arbitrary precision arithmetic implementation approaches?

    - by keykeeper
    I'm going to write a class library for .NET which provide an implementation of arbitrary precision arithmetic for integer, rational and maybe complex numbers. What best known approaches should I become familiar with? I tried to start with Knuth's TAOCP Vol.2 (Seminumerical Algorithms, Chapter 4 – Arithmetic) but it's too complicated. At least I couldn't get the ideas in a relatively short period of time.

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  • Greatly Enhanced LINQ Capabilities in Devart ADO.NET Data Providers

    Devart has recently announced the release of dotConnect products for Oracle, MySQL, PostgreSQL, and SQLite - ADO.NET providers that offer Entity Framework support, LINQ to SQL support, and contain an ORM model designer for developing LINQ to SQL and EF models based on different database engines. New dotConnect ADO.NET Providers offer advanced LinqConnect ORM solution (formerly known as Devart LINQ support) closely compatible with Microsoft LINQ to SQL and having its own advanced features. Devart...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • way to back up sql server 2005 database to just get the data and objects

    - by Caveatrob
    I'm trying to do a nightly backup of a SQL Server 2005 database to get the leanest, smallest file that includes all the table data, stored procedures, views, and functions. I'm downloading and saving this daily in case the server isn't available and I need to just get some data out. I don't care about the logs or any other parts of the DB but the data, procs, tables, and functions. What's the easiest way to get just this information backed up?

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  • Lesser-known Github features that I'm missing out on with Bitbucket? [closed]

    - by Ghopper21
    I've been using Bitbucket for my small-team development projects, with the assumption that it is more-or-less a Github clone with pricing that is better for my situation and support for Mercurial (which I don't need). However, I'm seeing there are material-if-not-overwhelming differences, e.g. Github's appealing and useful branches page versus Bitbucket's overly simple branch drop-down list. This makes me wonder: what else am I missing out on? What are the lesser known Github features that folks like me using Bitbucket to save money are missing out on? EDIT: following closure, I've asked for advice on making this question productive over at meta. See here.

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  • PHPForm Data Generate PDF & Send to Email?

    - by tom
    I'm a beginner in PHP I was wondering if this is easy to do or if i'd have to outsource this to a programmer - Basically when a user fills in the PHP Form and submits it I need this to generate as a PDF (with all the labels etc) which will then email/attach to MY email and NOT the user who submitted this form. I have looked at tcpdf, fpdi but i dont think any of those scripts allow me to do this specifically as from what i heard it generates a download link for the user, and that is not what i need. If anyone can help me it would be greatly appreciated. Regards Tom

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  • Protecting Data from Users

    What is the best way to prevent unintended updates or deletes in a table? The small changes may not be so hard to recover from, but what if every record in the table underwent a change? How can you protect users from themselves and how do you protect yourself from you?

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  • Sync Banshee library data.

    - by Dom
    I use Banshee to organise my music, I particularly like its scoring system and I have smart playlists based on it. However, I have two versions of my music library, one on each of my computers. As one of the computers is small I only have a favourite set of songs on that computer rather than my whole collection. The computers are not on a local network, but I do use Ubuntu One for file sharing between them. Is there any way I can synchronise song data (play count, score, skip count ...) and playlist data (including smart playlists that include songs based on this data) between the two computers? This would only be relevant of course for the songs that exist on both computers, the songs that exist on only one would need to be ignored. I did consider putting the library data file (I think it is .xml but I'm not sure) into the shared file and creating a symbolic link to it, but then I wouldn't be able to have a different set of songs on each computer. Thank you.

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  • Silverlight 4 + RIA Services - Ready for Business: Consuming Data in the Silverlight Client

    To continue our series, lets see where the fun comes in my look at how easy that is to consume from the client.  First just to help you understand what is happening behind the covers, lets look at a code-behind solution.  In View\Home.xaml put a simple DataGrid on the form. <sdk:DataGrid Name="dataGrid1" Height="152" Width="692" /> Then add these lines of code to Home.xaml.cs   1: var context = new DishViewDomainContext(); 2: this.dataGrid1.ItemsSource...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How do I tell mdadm to start using a missing disk in my RAID5 array again?

    - by Jon Cage
    I have a 3-disk RAID array running in my Ubuntu server. This has been running flawlessly for over a year but I was recently forced to strip, move and rebuild the machine. When I had it all back together and ran up Ubuntu, I had some problems with disks not being detected. A couple of reboots later and I'd solved that issue. The problem now is that the 3-disk array is showing up as degraded every time I boot up. For some reason it seems that Ubuntu has made a new array and added the missing disk to it. I've tried stopping the new 1-disk array and adding the missing disk, but I'm struggling. On startup I get this: root@uberserver:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md_d1 : inactive sdf1[2](S) 1953511936 blocks md0 : active raid5 sdg1[2] sdc1[3] sdb1[1] sdh1[0] 2930279808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] I have two RAID arrays and the one that normally pops up as md1 isn't appearing. I read somewhere that calling mdadm --assemble --scan would re-assemble the missing array so I've tried first stopping the existing array that ubuntu started: root@uberserver:~# mdadm --stop /dev/md_d1 mdadm: stopped /dev/md_d1 ...and then tried to tell ubuntu to pick the disks up again: root@uberserver:~# mdadm --assemble --scan mdadm: /dev/md/1 has been started with 2 drives (out of 3). So that's started md1 again but it's not picking up the disk from md_d1: root@uberserver:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid5 sde1[1] sdf1[2] 3907023872 blocks level 5, 64k chunk, algorithm 2 [3/2] [_UU] md_d1 : inactive sdd1[0](S) 1953511936 blocks md0 : active raid5 sdg1[2] sdc1[3] sdb1[1] sdh1[0] 2930279808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] What's going wrong here? Why is Ubuntu trying to pick up sdd into a different array? How do I get that missing disk back home again? [Edit] - After adding the md1 to mdadm.conf it now tries to mount the array on startup but it's still missing the disk. If I tell it to try and assemble automatically I get the impression it know it needs sdd but can't use it: root@uberserver:~# mdadm --assemble --scan /dev/md1: File exists mdadm: /dev/md/1 already active, cannot restart it! mdadm: /dev/md/1 needed for /dev/sdd1... What am I missing?

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  • Should you always pass the bare minimum data needed into a function

    - by Anders Holmström
    Let's say I have a function IsAdmin that checks whether a user is an admin. Let's also say that the admin checking is done by matching user id, name and password against some sort of rule (not important). In my head there are then two possible function signatures for this: public bool IsAdmin(User user); public bool IsAdmin(int id, string name, string password); I most often go for the second type of signature, thinking that: The function signature gives the reader a lot more info The logic contained inside the function doesn't have to know about the User class It usually results in slightly less code inside the function However I sometimes question this approach, and also realize that at some point it would become unwieldy. If for example a function would map between ten different object fields into a resulting bool I would obviously send in the entire object. But apart from a stark example like that I can't see a reason to pass in the actual object. I would appreciate any arguments for either style, as well as any general observations you might offer. I program in both object oriented and functional styles, so the question should be seen as regarding any and all idioms.

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  • Is it Considered Good SQL practice to use GUID to link multiple tables to same Id field?

    - by Mallow
    I want to link several tables to a many-to-many(m2m) table. One table would be called location and this table would always be on one side of the m2m table. But I will have a list of several tables for example: Cards Photographs Illustrations Vectors Would using GUID's between these tables to link it to a single column in another table be considered 'Good Practice'? Will Mysql let me to have it automatically cascade updates and delete? If so, would multiple cascades lead to an issues? UPDATE I've read that GUID (a hex number) Generally takes up more space in a database and slows queries down. However I could still generate 'unique' ids by just having the table initial's as part of the id so that the table card's id would be c0001, and then Illustrations be I001. Regardless of this change, the questions still stands.

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  • Outlook data file cannot be accessed. [closed]

    - by Alex
    Possible Duplicate: Outlook data file cannot be accessed. Hello. I am using the beta 2010 Office Outlook. When I try receive or send, i get the following error "outlook data file cannot be accessed." Repair/reinstall office and try to use any different outlook data files is not take any effect.

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  • backup and file server for 50+ TB of data

    - by a-bomb
    our office wants to build a new server to handle our data, over the last 10 years our data was stored on CDs, DVDs, HDDs but now they want all of it in one place that is attached to the network for everybody in the office to access it. the data is 20TB new data and the rest is old, the important now is to store these 20tb and gradually store the other 30tb over time. so what is the best solution to do ? we thought of getting an hp server and connect it to an external enclosure that either had tape drives or HDDs (we haven;t decided yet) or to get a NAS server and connect it to the hp server. what should we do because this is new for us ...

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  • recover from sudo rm -rf command

    - by user106116
    By mistake, I ended up executing "rm -rf /" command from sudo on my laptop which erased many files before it stopped. Now when I restarted my system , it gives a GRUB rescue prompt. I am having dual boot with Ubuntu 12.04 and Windows 7 I request the help for following: How do I fix the currently installed Ubuntu without overwriting/erasing the left over files (from rm -rf command)? Is using Boot-Repair safe ? Is there a way to directly go to Windows 7?

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  • Q: MySQL Cluster - Data insertion in NDBCLUSTER table - error out after 5 million rows

    - by Mata
    MysqlCluster version: mysql-5.6.11 ndb-7.3.2 Insertload = 50 M dataset Datanodes = 3 LOAD DATA INFILE '/input_50m/Table_1_sorted.csv' IGNORE INTO TABLE nw_ndb FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n' We recently setup a new mySQL cluster and trying to load data from a flat file. But getting error “Got temporary error 4010 'Node failure caused abort of transaction' from NDBCLUSTER" when inserting 5 million rows in a single table in MySQL Cluster. We are using "LOAD DATA INFILE" command to load the data in the table from csv file. Server (musqld, ndb nodes) has good hardware: 126 GB RAM, 32 Gb allocated to mysqld tried below settings with no effect: SET autocommit=0; SET FOREIGN_KEY_CHECKS=0; SET unique_checks=0; SET GLOBAL ndb_batch_size=8*1024*1024; SET GLOBAL ndb_cache_check_time = 1000; SET GLOBAL ndb_index_stat_cache_entries = 10000000; SET SESSION BULK_INSERT_BUFFER_SIZE=256217728; SET GLOBAL KEY_BUFFER_SIZE=256217728; Any clues?

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  • Data base preference for network based C# windows application [on hold]

    - by Sinoop Joy
    I'm planning to develop a C# widows based application for an academy. The academy will have different instances of application running in different machines. The database should have shared access. All the application instances can do update, delete or insert. I've not done any network based application. Anybody can give any useful link to where to start with ? Which database would give max performance with all required features i said for this scenario ?

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