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  • YAGNI and database creation scripts

    - by Daniel Straight
    Right now, I have code which creates the database (just a few CREATE queries on a SQLite database) in my main database access class. This seems unnecessary as I have no intention of ever using the code. I would just need it if something went wrong and I needed to recreate the database. Should I... Leave things as they are, even though the database creation code is about a quarter of my file size. Move the database-creation code to a separate script. It's likely I'll be running it manually if I ever need to run it again anyway, and that would put it out-of-sight-out-of-mind while working on the main code. Delete the database-creation code and rely on revision control if I ever find myself needing it again.

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  • What resources will help me understand the fundamentals of Relational Database Design.

    - by Rachel
    This are few of the fundamental database questions which has always given me trouble. I have tried using google and wiki but I somehow I miss out on understanding the functionality rather than terminology. If possible would really appreciate if someone can share more insights on this questions using some visual representative examples. What is a key? A candidate key? A primary key? An alternate key? A foreign key? What is an index and how does it help your database? What are the data types available and when to use which ones?

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  • How secure is a PostgreSQL database if my server is stolen?

    - by orokusaki
    If I have a server with a database if top secret data in PostgreSQL and my password is practically impossible to crack (128 character string of all sorts of weird chars, generated by hand). The server password is also uncrackable in theory (basically, ignore the possibility of a password crack on the DB). Aside from a password crack, how easy is it to get the data out of this database? Assumptions: Only the DB exists on the server. There is no password in a PHP script or anything like that The person who has the server is a computer / DB / hard-drive recovery expert I'm not using any hard-drive encryption or anything out of the norm for protection I'm trying to understand the risks involved with somebody gaining physical access to my server's hard-drives.

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  • How it is better to organise a large database of addresses?

    - by shurik2533
    How it is better to organise a large database of addresses? It is need to create mysql database of addresses. How it is better for organising? I have two variants: 1) cuontries id|name 1 |Russia cities id|name 1 |Moscow 2 |Saratov villages id|name streets id|name 1 |Lenin st. places id|name |country_id|city_id|village_id|street_id|building_number|office|flat_number|room_number 1 |somebuilding |1 |1 |NULL |1 |31 |12a |NULL |NULL For simplification I use not all making addresses. If any part does not participate in the address it is equal NULL 2) addressElements id|name 1 |country 2 |city 3 |village 4 |street 5 |office 6 |flat_number 7 |room_number addressValues id|addressElement_id|value 1 |1 |Russia 2 |2 |Saratov 3 |2 |Moscow 4 |3 |Prostokvashino 5 |4 |Lenin st. places id| name 1 | somebuilding places_has_addressValues place_id|addressValue_id 1 |1 1 |3 1 |5 UPD. I have decided to make as follows

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  • Copy of Access mdb database being updated by live database

    - by James
    I'm trying to compute statistics for data held in an Access .mdb database. In order to avoid interfering with the live database, I'm working from a copy which I made by simply using copy-paste in Windows Explorer. The copy resides in the same directory, but with a different name. I'm using R and RODBC to connect to the copy of the file. The strange thing is that new data that is being updated on the original live database is appearing in my queries. This is despite the file timestamps of the copy not changing at all. It is also causing some slowdown in the live database. My understanding is that the .mdb files are standalone, or is this not the case? Should I have copied the database in a different way?

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  • CREATE DATABASE permission denied in database 'master'.

    - by MuraliVijay CSK
    I have used this connection string to connect my database.... <connectionStrings> <add name="connectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\Taxi.mdf;Database=Taxi;Trusted_Connection=Yes;" providerName="System.Data.SqlClient"/> i got this error while running in IIS Exception Details: System.Data.SqlClient.SqlException: CREATE DATABASE permission denied in database 'master'. Cannot attach the file 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\Taxi.mdf' as database 'Taxi'.

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  • database encryption questions

    - by 5YrsLaterDBA
    We are using Sybase SQL Anywhere 11. We need to encrypt some of our tables in our database. I followed the instruction and did it. We selected the "strong" option with encryptionKey and AES256_FIPS algorithm. But there are something I am not clear about them. It will require encryptonKey when we create the database, remove the database and start the database server but it will NOT require encryptionKey when we stop the database server and connect to the server to create tables and add data. Why there is NO encryptionKey asked when we connect to it or try to stop the server? I am doing something wrong? don't know how to test the encryption? I still can see all plain text in the encrypted tables when I use Sybase Central tool. If somebody knows the database user name and password, he/she can connect to the database and read the content without the encryptionKey. is this right?

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  • Won't connect to the database

    - by user1657958
    I'm confused...I'm using the same code in a different document and in there it's not a problem to get a connection to the database. But in the new document it's just not working...(password, username, database name...all is checked and correct) :-/ <?php define ("DB_HOST", "db1234567.db.hello.com"); // set database host define ("DB_USER", "db1234567"); // set database user define ("DB_PASS","password123"); // set database password define ("DB_NAME","db1234567"); // set database name $link = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("Couldn't make connection."); $db = mysql_select_db(DB_NAME, $link) or die("Couldn't select database"); ?> In the browser I get this: "Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'db1234567'@'123.123.12.12 (using password: YES) in /homepages/12/1234567/test/test.php on line 8 Couldn't make connection." Would be cool if someone could help me :) I'm not seeing any error... Thx!

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  • SQL SERVER – What is Spatial Database? – Developing with SQL Server Spatial and Deep Dive into Spati

    - by pinaldave
    What is Spatial Database? A spatial database is a database that is optimized to store and query data related to objects in space, including points, lines and polygons. While typical databases can understand various numeric and character types of data, additional functionality needs to be added for databases to process spatial data types. (Source: Wikipedia) Today I will be talking about the same subject at Microsoft TechEd India. If you want to learn about how to spatial aspect of data and how to integrate them with SQL Server this is the perfect session for you. Spatial is very special concept of SQL Server and I really like how it is implemented in SQL Server. In general Performance Tuning and Query Optimization is something I always have enjoyed in my professional life. Index are my best friends and many time, by implementing and many time by removing I have improved the performance of the system. In this session, I will be talking about Index along with Spatial Data. As Spatial Database is very interesting concept, I will cover super short but very interesting 10 quick slides about this subject. I will make sure in very first 20 mins, you will understand following topics Introduction to Spatial Database One line definition Understanding Spatial Indexing Index Internals Query/Performance Tuning Query Hinting/Cost Analysis Spatial Index Catalog Views Performance Troubleshooting Finding Optimal Index using Spatial Index SP Common Errors Index Maintenance This slides decks will be followed by around 30 mins demo which will have story of geometry, geography, index internals and performance tuning. If you are interested in learning how GIS works and how SQL Server out of the box supports this wonderful tools, you will really like how the story is told. I am sure all people who attend the event will know how the Bangalore is positioned on the map of India. I will take example of Bangalore and Hyderabad and demonstrate how index can improve the performance. Well there are lots of story to tell in the session, and I will be opening this session with the beautiful script of Botticelli’s Birth of Venus created by Michael J. Swart. I will also demonstrate few real life scenario where I will be talking about Spatial Database and its usage. Do not miss this session. At the end of session there will be book awarded to best participant. My session details: Session 3: Developing with SQL Server Spatial and Deep Dive into Spatial Indexing Date: April 14, 2010 Time: 5:00pm-6:00pm Microsoft SQL Server 2008 delivers new spatial data types that enable you to consume, use, and extend location-based data through spatial-enabled applications. Attend this session to learn how to use spatial functionality in next version of SQL Server to build and optimize spatial queries. This session outlines the new geography data type to store geodetic spatial data and perform operations on it, use the new geometry data type to store planar spatial data and perform operations on it, take advantage of new spatial indexes for high performance queries, use the new spatial results tab to quickly and easily view spatial query results directly from within Management Studio, extend spatial data capabilities by building or integrating location-enabled applications through support for spatial standards and specifications and much more. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Index, SQL Optimization, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, T SQL, Technology Tagged: Spatial Database

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  • Learn Lean Software Development and Kanban Systems

    - by Ben Griswold
    I did an in-house presentation on Lean Software Development (LSD) and Kanban Systems this week.  Beyond what I had previously learned from various podcasts, I knew little about either topic prior to compiling my slide deck.  In the process of building my presentation, I learned a ton.  I found the concepts weren’t very difficult to grok; however, I found little detailed information was available online. Hence this post which is merely a list of valuable resources. Principles of Lean Thinking, Mary Poppendieck Lean Software Development, May Poppendieck Lean Programming, Mary Poppendieck Lean Software Development, Wikipedia Implementing Lean Software Thinking: From Concept to Cash, Poppendieck Lean Software Development Overview, Darrell Norton Lean Thinking: Banish Waste and Create Wealth in Your Corporation The Goal: A Process of Ongoing Improvement The Toyota Way Extreme Toyota: Radical Contradictions That Drive Success at the World’s Best Manufacturer Elegant Code Cast 17 – David Laribee on Lean / Kanban Herding Code Episode 42: Scott Bellware on BDD and Lean Development Seven Principles of Lean Software Development, Przemys?aw Bielicki Kanban Boards for Agile Project Management with Zen Author Nate Kohari Herding Code 55: Nate Kohari brings Your Moment of Zen James Shore on Kanban Systems Agile Zen Product Site A Leaner Form of Agile, David Laribee Kanban as Alternative Agile Implementation, Mark Levison Lean Software Development, Dr. Christoph Steindl Glossary of Lean Manufacturing Terms Why Pull? Why Kanban?, Corey Ladas

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  • Oracle Database Appliance Now Certified by SAP

    - by Bandari Huang
    All SAP products based on SAP NetWeaver 7.x that are also certified for Oracle Database 11g Release 2 (single node or RAC) can now be used with the Oracle Database Appliance. RAC One Node is NOT supported. Only Three-Tier SAP Installations. Only the Oracle database can run on the Oracle Database Appliance.  No SAP instance can be deployed on the Oracle Database Appliance. SAP instances have to run on different middle-tier machines of any hardware architecture and operating system. Central Services (ASCS and/or SCS) can be configured to run on the Oracle Database Appliance for Unicode installations of SAP. SAP BR*Tools support is now available for the Oracle Database Appliance. For more information about SAP on ODA, please refer: Using SAP NetWeaver with the Oracle Database Appliance New Nov2012 Note 1760737 - SAP Software and Oracle Database Appliance (ODA) Note 1785353 - ODA 11.2.0: Patches for 11.2.0.3  

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  • What is a better language to use when building a database: Visual C# or Visual Basic (VB.net)? [on hold]

    - by user3413537
    I'm building a GUI and a database which is using SQL as a server (internal database not a web application). Which language is more of a "right tool" when it comes to building a not very structurally complicated database? What are the advantages and disadvantages of Visual C# / VB.net? I've been reading a lot of stuff online and they said that VB.net is not as capable and it doesn't have as much support as Visual C#, and it seems that VB.net is on a decline in terms of popularity.

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  • Is there a secure way to add a database troubleshooting page to an application?

    - by Josh Yeager
    My team makes a product (business management software) that our customers install on their own servers. The product uses a SQL database for data storage and app configuration. There have been quite a few cases where something strange happened in the customer's database (caused by bugs in our app and also sometimes admins who mess with the database). To figure out what is wrong with the data, we have to send SQL scripts to the customer and tell them how to run them on the database server. Then, once we know how to fix it, we have to send another script to repair the data. Is there a secure way to add a page in our application that allows an application admin to enter SQL scripts that read and write directly to the database? Our support team could use that to help customers run these scripts, without needing direct access to the SQL server. My big concerns are that someone might abuse this power to get data they shouldn't have and maybe to erase or modify data that they shouldn't be able to modify. I'm not worried about system admins, because they could find another way to do the same thing. But what if someone else got access to the form? Is there any way to do this kind of thing securely?

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  • How do you off load work from the database?

    - by TheLQ
    In at least the web development field, web servers are everywhere but are backed by very few database servers. As web servers get hit with requests they execute large queries on the database, putting the server under heavy load. While web servers are very easy to scale, db servers are much harder (at least from what I know), making them a precious resource. One way I've heard from some answers here to take load off the database is to offload the work to the web server. Easy, until you realize that now you've got a ton of traffic internally as a web server tries to run SELECT TOP 3000 (presumably to crunch the results on its own), which still slows things down. What are other ways to take load off the database?

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  • Should I close database connections after use in PHP?

    - by Sprottenwels
    I wonder if I should close any unnecessary database connection inside of my PHP scripts. I am aware of the fact that database connections are closed implicitly when the block stops executing and 'manually' closing the connections could kinda bloat the codebase with unnecessary code. But shouldn't I do so in order to make by code as readable and as easy understandable as possible, while also preventing several possible issues during run time? Also, if I would do, would it be enough to unset() my database object?

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  • Beta Opportunity Soon to Close on "Oracle Database 12c: Installation and Administration" (1Z0-062)

    - by Brandye Barrington
    This is your last opportunity to take the "Oracle Database 12c: Installation and Administration" (1Z1-062) beta exam at the greatly discounted rate of $50 USD, as well as be one of the first to hold this new OCA certification. Earning the Oracle Database 12c Administrator Certified Associate credential gives you the foundational knowledge and skills needed to administer the Oracle Database and sets the stage for your future progression to Oracle Database 12c Administrator Certified Professional.  You can get all preparation details, including exam objectives, number of questions, time allotments, and pricing on the Oracle Certification website. Visit pearsonvue.com/oracle and register for exam 1Z1-062. QUICK LINKS: Certification Track: Oracle Database 12c Administrator Certified Associate Certification Exam: "Oracle Database 12c: Installation and Administration" (1Z1-062) Recommended Training: Oracle Database 12c: Admin, Install and Upgrade Accelerated, Oracle Database 12c: Install and Upgrade Workshop, or Oracle Database 12c: Administration Workshop Certification Website: About Beta Exams Register Now: Pearson VUE

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  • For an ORM supporting data validation, should constraints be enforced in the database as well?

    - by Ramnique Singh
    I have always applied constraints at the database level in addition to my (ActiveRecord) models. But I've been wondering if this is really required? A little background I recently had to unit test a basic automated timestamp generation method for a model. Normally, the test would create an instance of the model and save it without validation. But there are other required fields that aren't nullable at the in the table definition, meaning I cant save the instance even if I skip the ActiveRecord validation. So I'm thinking if I should remove such constraints from the db itself, and let the ORM handle them? Possible advantages if I skip constraints in db, imo - Can modify a validation rule in the model, without having to migrate the database. Can skip validation in testing. Possible disadvantage? If its possible that ORM validation fails or is bypassed, howsoever, the database does not check for constraints. What do you think? EDIT In this case, I'm using the Yii Framework, which generates the model from the database, hence database rules are generated also (though I could always write them post-generation myself too).

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  • Scripting Languages vs. Compiled Languages for web development

    - by Austin Hyde
    Though I come from a purely PHP background on the web development side of programming, I have also spent much time with C# and C++ on the desktop. I don't really want to spark any flame wars, but: When should you use scripting languages over compiled languages for website development? (and vice versa) Just to clarify, for the sake of this question, I define a "scripting language" to mean an interpreted language like PHP, Python, or Ruby, and a "compiled language" to mean a strongly typed, compiled language like C#, C++, Java, or VB.

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  • SSL with Visual Studio Development Server

    - by Nissan Fan
    Is it possible to use SSL with Visual Studio Development Server (a.k.a. Web Application project)? I don't want to have to deploy IIS locally if possible. I'm running Windows 7. NOTE: I've seen this (http://connect.microsoft.com/VisualStudio/feedback/details/354576/add-https-support-to-visual-studio-asp-net-development-server) but I was still hoping there was a workaround.

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  • Debugging an httpmodule on the asp.net development server

    - by Caveatrob
    Hi, I want to integrate some http modules in my asp.net application (v 3.5, visual studio 2008) and I'm not sure how to debug or use such modules while debugging in the asp.net development server that fires when I run the web app. Do I need to include the module source in the solution or can I just drop the DLL into BIN? I'm from the 1.1 world and am not yet used to the asp.net development server.

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  • Least intrusive antivirus software for development PC?

    - by poppavein
    What is the least intrusive and most effective antivirus software for a Windows PC that is used for software development (lots of small files and lots of disk I/O)? The software should support running from the command line so that virus scan be included into the build process. Edit: I understand that prevention techniques work better than any antivirus, but the employer demands that commercial AV software be used in the development environment (looking a replacement for horrible Symantec Antivirus).

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  • How to update Xcode to install "UNIX Development Support"

    - by Oscar Reyes
    I installed Xcode a long time ago. Apparently I didn't check back then the "UNIX Developemtn Support" checkbox. Now I want to have them bu when I click on the installation this is what appears: The UNIX Development Support check box is disabled Q. ¿How can I install the UNIX Development Support? Is there a way to run some script that creates all the needed links from /Developer/ to /usr/bin ? Thanks in advance.

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