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• The pros and cons of learning

  - by AaronBertrand

  This week I am at a training course put on by Paul Randal ( blog | twitter ) and Kimberly Tripp ( blog | twitter ) entitled " SQL Immersion ." It is essentially a 5-day deep dive into some of the more important bowels of the Microsoft SQL Server 2008 Internals book they co-wrote with Kalen Delaney, Adam Machanic and Conor Cunningham - with a lot of extra information, insight, experience and interactivity thrown in. I am seeing a lot of benefits from this already. The additional insight around what's...(read more)

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• Learning PostgreSql: polymorphism

  - by Alexander Kuznetsov

  Functions in PL/PgSql are polymorphic, which is very different from T-SQL. Demonstrating polymorphism For example, the second CREATE FUNCTION in the following script does not replace the first function - it creates a second one: CREATE OR REPLACE FUNCTION public .GetQuoteOfTheDay ( someNumber INTEGER ) RETURNS VARCHAR AS $body$ BEGIN RETURN 'Say my name.' ; END ; $body$ LANGUAGE plpgsql ; CREATE OR REPLACE FUNCTION public .GetQuoteOfTheDay ( someNumber REAL ) RETURNS VARCHAR AS $body$ BEGIN RETURN...(read more)

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• Learning PostgreSql: First Steps

  - by Alexander Kuznetsov

  In this series of blog posts we shall migrate some functionality from SQL Server to PostgreSql 9.2. The emphasis of these blog posts will be on what PostgreSql does differently from Sql Server - I assume that the reader has considerable knowledge of Sql Server, but might know nothing of PostgreSql. Also we shall concentrate on development, not administration. In a true agile fashion, we shall learn only what we need to get this particular job done, and nothing else, but we shall strive to learn it...(read more)

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• Learning PostgreSql: bulk loading data

  - by Alexander Kuznetsov

  In this post we shall start loading data in bulk. For better performance of inserts, we shall load data into a table without constraints and indexes. This sounds familiar. There is a bulk copy utility, and it is very easy to invoke from C#. The following code feeds the output from a T-SQL stored procedure into a PostgreSql table: using ( var pgTableTarget = new PgTableTarget ( PgConnString , "Data.MyPgTable" , GetColumns ())) using ( var conn = new SqlConnection ( connectionString )) { conn.Open...(read more)

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• Java - learning / migrating fast

  - by Yippie-Kai-Yay

  This is not one of those questions like "How do I learn Java extremely fast, I know nothing about programming, but I heard Java is cool, yo". I have an interview for a Java Software Developer in a couple of weeks and the thing is that I think that I know C++ really good and I am somewhat good at C# (like, here I can probably answer on a lot of questions related to these languages), but I have almost zero experience with Java. I have a lot of projects written in both languages, I participiated in several open-source projects (mostly C++, though). Now, what should I do (in your opinion) to prepare myself for this Java interview. I guess migrating from C# to Java should be kind of fast, especially when you know a lot about programming in global, patterns, modern techniques and have a lot of practical experience behind you. But still two weeks is obviously not enough to get Java in-depth - so what should I focus on to have the best chances to pass the interview? Thank you.

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• Learning PostgreSql: old versions of rows are stored right in the table

  - by Alexander Kuznetsov

  PostgreSql features multi-version concurrency control aka MVCC. To implement MVCC, old versions of rows are stored right in the same table, and this is very different from what SQL Server does, and it leads to some very interesting consequences. Let us play with this thing a little bit, but first we need to set up some test data. Setting up. First of all, let us create a numbers table. Any production database must have it anyway: CREATE TABLE Numbers ( i INTEGER ); INSERT INTO Numbers ( i ) VALUES...(read more)

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• Linux Learning curve for a 'Lifetime' windows user [closed]

  - by gary

  I am using windows for almost 8-10 years and have never worked on linux. Mostly i used to work in VB, VC++ MFC and little bit of .NET(C# and VB) so i didn't bother about Linux. But now when i got an opportunity to work with linux i dont want to miss it, here are my questions : Where can i find useful resources for Linux newbies? Which books/Tutorials will you suggest to start? Which distro shall i use? What was your experience while moving from Windows to Linux?

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• ASP.NET and C# learning curve [closed]

  - by Mashael

  My friend wants to become a web developer. However, he doesn't know how to start if he is going to become ASP.NET developer. He found a book which is titled ' Beginning ASP.NET 4: in C# and VB (Wrox Programmer to Programmer) by Imar Spaanjaars' but he is not sure if this will be right start or not because he has know knowledge in OOP programming and whether he has to learn C# first and read such book or is it OK to start with such that book assuming that the book will teach some fundamentals in C#!

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• Learning to program in C (coming from Python)

  - by Honza Pokorny

  If this is the wrong place to ask this question, please let me know. I'm a Python programmer by occupation. I would love to learn C. Indeed, I have tried many times, but I always get discouraged. In Python, you write a few lines and the program does wonders. In C, I can't seem to be able to do anything useful. It seems to be very complicated to even connect to the Internet. Do you have any suggestions on what I can do to learn C? Are there are any good websites? Any cool projects? Thanks

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• Number crunching algo for learning multithreading?

  - by Austin Henley

  I have never really implemented anything dealing with threads; my only experience with them is reading about them in my undergrad. So I want to change that by writing a program that does some number crunching, but splits it up into several threads. My first ideas for this hopefully simple multithreaded program were: Beal's Conjecture brute force based on my SO question. Bailey-Borwein-Plouffe formula for calculating Pi. Prime number brute force search As you can see I have an interest in math and thought it would be fun to incorporate it into this, rather than coding something such as a server which wouldn't be nearly as fun! But the 3 ideas don't seem very appealing and I have already done some work on them in the past so I was curious if anyone had any ideas in the same spirit as these 3 that I could implement?

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• The pros and cons of learning

  - by AaronBertrand

  This week I am at a training course put on by Paul Randal ( blog | twitter ) and Kimberly Tripp ( blog | twitter ) entitled " SQL Immersion ." It is essentially a 5-day deep dive into some of the more important bowels of the Microsoft SQL Server 2008 Internals book they co-wrote with Kalen Delaney, Adam Machanic and Conor Cunningham - with a lot of extra information, insight, experience and interactivity thrown in. I am seeing a lot of benefits from this already. The additional insight around what's...(read more)

  Read the article

• Java - learning / migrating fast

  - by Yippie-Kai-Yay

  Hello! This is not one of those questions like "How do I learn Java extremely fast, I know nothing about programming, but I heard Java is cool, yo". I have an interview for a Java Software Developer in a couple of weeks and the thing is that I think that I know C++ really good and I am somewhat good at C# (like, here I can probably answer on a lot of questions related to these languages), but I have almost zero experience with Java. I have a lot of projects written in both languages, I participiated in several open-source projects (mostly C++, though). Now, what should I do (in your opinion) to prepare myself for this Java interview. I guess migrating from C# to Java should be kind of fast, especially when you know a lot about programming in global, patterns, modern techniques and have a lot of practical experience behind you. But still two weeks is obviously not enough to get Java in-depth - so what should I focus on to have the best chances to pass the interview? Thank you.

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• Getting started and learning programming?

  - by Blagersdeath

  Hello, I am looking to get started in programming. I am young and know some html as I am taking a Web Design class at my school now. I am planning to apply to Full Sail University when I graduate High School, but I would like to get started now so that I am ahead of the game if I get accepted. I want to learn any and all programing language's. I would appreciate it if anyone can help me out by telling me where I can learn. By in a book, web site, articles, blog, or whatever you can help me in I would appreciate it. Thanks.

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• Will learning programming be as fundamental as learning reading/writing to the kids of the future?

  - by pythagras

  It seems I encounter more and more economists, scientists, and miscellaneous other professionals that have jobs that involve programming on some level. More and more, the jobs that my peers have in many many technical professions involve at least some simple scripting if not something more involved. It seems it used to be that "software engineer" was a distinct profession, now its becoming just another skill like writing -- something that any serious technical professional should be able to use for their job. I see a future where programming is essential to getting any kind of technical/mathematical job. Extrapolating on my anecdotal view of my colleagues... Will the kids of the future become literate in programming in the same way they become readers/writers? Will it become so fundamental to our economy and society that it will be taught at an early age? Will interacting with computers be as important as interacting with other people?

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• Learning Issued Token in Federated Service

  - by Lijo

  I would like to learn federated WCF service. I have the following in my system. • Windows XP • Visual Studio 2010 Express • SQL Server 2008 Express Is it possible to create a federated service sample with this infrastructure? Is there any article for that? UPDATE Federation: http://msdn.microsoft.com/en-us/library/ms730908.aspx Federation Sample: http://msdn.microsoft.com/en-us/library/aa355045.aspx

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• Learning programming

  - by user65862

  I am a senior & am a retired R.N., always good at math (50+ yrs ago, but still am). I have been in a computer users group since the mid 90's, & have become moderately advanced in using computers, including trouble-shooting other people's computer problems. Most of my expertise was gained by reading, asking questions, & trying my own trouble-shooting with the help of books & the internet. Now,I would like to take the next step and learn programming. What would be the best way for me to learn programming? Attending classes isn't a practical option, and I'm not in a position to spend much money. Any ideas would be greatly appreciated. Thank you. Margaret

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• Learning PostgreSql: Embracing Change With Copying Types and VARCHAR(NO_SIZE_NEEDED)

  - by Alexander Kuznetsov

  PostgreSql 9.3 allows us to declare parameter types to match column types, aka Copying Types. Also it allows us to omit the length of VARCHAR fields, without any performance penalty. These two features make PostgreSql a great back end for agile development, because they make PL/PgSql more resilient to changes. Both features are not in SQL Server 2008 R2. I am not sure about later releases of SQL Server. Let us discuss them in more detail and see why they are so useful. Using Copying Types Suppose...(read more)

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• Where should I start and how to progress when learning Java EE

  - by danizmax

  I know basic stuff like, what are beans, jsp, servlet, jsf and how this stuff should work together. I know how to make basic jsp page with database query for example. Now I need to know what is the best path to learn all this stuff. My plan is to learn in this order: jsp (including persistance and JSTL) servlets + beans jsf The jump to frameworks (hibernate, struts, spring, etc) Also I'm not exactly sure about JSF, is it a must to make great pages or is it just a convenience to know?

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• Learning to program on punchcards

  - by Plutor

  I'd like to try programming with punch cards once in my life. How can I do this? I'm in my 30s, and grew up entirely in the PC era, programming on computers with screens and keyboards. I want to experience the way my father and grandfather used to work. I imagine the hardware (and probably the cards themselves) are no longer manufactured. Are there any universities or museums with functioning punch card readers anymore? I'm in Boston, but I'm willing to travel to do this. I asked MetaFilter, and I got some mixed answers (along with a lot of "no, don't do this" nay-saying). I did get a pointer to the Retro-Computing Society Of Rhode Island, but I haven't received a response to my email to them yet.

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• Make Your Own Paper-Craft Enigma Machine [DIY Project]

  - by Asian Angel

  If you love tinkering around with ciphers and want a fun DIY project for the upcoming weekend, then we have just the thing for you. Using common household items you can construct your own personal Enigma machine that will be completely compatible with all the settings of a real Enigma machine (models I, M1, M2 and M3). Visit the second link below for the step-by-step instructions and enjoy putting together this awesome DIY project! PDF Templates for the Enigma Machine Note: This is a direct link for the PDF file itself and the templates are sized for printing on 2 A4 sheets of paper. Enigma/Paper Enigma Instruction Homepage [via BoingBoing] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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• Constructs for wrapping a hardware state machine

  - by Henry Gomersall

  I am using a piece of hardware with a well defined C API. The hardware is stateful, with the relevant API calls needing to be in the correct order for the hardware to work properly. The API calls themselves will always return, passing back a flag that advises whether the call was successful, or if not, why not. The hardware will not be left in some ill defined state. In effect, the API calls advise indirectly of the current state of the hardware if the state is not correct to perform a given operation. It seems to be a pretty common hardware API style. My question is this: Is there a well established design pattern for wrapping such a hardware state machine in a high level language, such that consistency is maintained? My development is in Python. I ideally wish the hardware state machine to be abstracted to a much simpler state machine and wrapped in an object that represents the hardware. I'm not sure what should happen if an attempt is made to create multiple objects representing the same piece of hardware. I apologies for the slight vagueness, I'm not very knowledgeable in this area and so am fishing for assistance of the description as well!

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• Database Machine, 11gR2 és a Tivoli Data Protection is együttmuködik

  - by Fekete Zoltán

  Felmerült a kérdés, hogy a Database Machine környezetben végezhetjük-e a mentéseket Tivoli Data Protection for Oracle szoftverrel. A válasz: IGEN. Az IBM Tivoli Data Protection for Oracle V5.5.2 on Linux x86_64 immár bevizsgáltatott az Oracle 11gR2 RAC-cal. Az aktuális support információ itt található: A V5.5.2-re kattintva megtaláljátok a következo adatokat: Oracle Enterprise Linux 5 with any of the following Oracle releases: * 64-bit Oracle Standard or Enterprise Server 10gR2, 11g, or 11gR2 * 64-bit Real Application Clusters (RAC) 10gR2, 11g, or 11gR2 Ez az információ elegendo és remek :), mivel a Database Machine komponensek Oracle Enterprise Linux operációs rendszeren muködnek, 64 bites architektúrában és az Oracle RMAN (Recovery Manager) elemet tudja használni a TDP.

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• Database Machine gyakorlati tapasztalatok!

  - by Fekete Zoltán

  Ketto héttel ezelott gyakorlati tapasztalatokat szereztünk egy magyarországon muködo vállalat adattárházával egy igazi Database Machine / Exadata környezetben, egy Sun Oracle Database Machine Half Rack kiépítéssel. Az eredmények valóban lenyugözöek. Az Exadata Storage izgalmas és egyedi tulajdonságai: Smart Scan, Smart Flash Cache, Storage Index, tömörítés: Exadata Hybrid Columnar Compression, a hihetetlen mértéku párhuzamosság olyan teljesítmény elonyhöz juttatja a felhasználót, ami szemelkerekedést, ujjongást és hosszantartó belso mosolyt eredményez. Hogy ez hasznos-e az Ön és adatbázis környezete egészségére nézve? :) Kérdezze meg orvosát, gyógyszerészét és a white paper leírásokat, továbbá publikált ügyfél történeteket. A technikai és kereskedelmi részletekrol kérdezzen engem. :) A holnapi (2010. máricius 24. szerda) eloadáson a HOUG Konferencián személyesen is meghallgathatók ezek a gyakorlati tapasztalatok, authentikus forrásból. Hasonlóan szép napokat kívánok mindenkinek!

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• Writing and Understanding code

  - by Kitex

  I can write code. I can read code but I can't implement good code. How to develop deep understanding of any framework or stuff that we are working on? Is it looking into documentation and working on it? I have seen in this form that people that have great understanding of things they are working on. How is this possible? How to not scrape on the surface only? How to manage time vs learning vs productivity?

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• How long a desktop programmer able to convert himsleft on mastering PHP ?

  - by justjoe

  i know it depends on many thing. But can anybody tell me how long it should be ? I just want to draw a boundaries between successful and failed attempt to convert myself ?

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