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• How to backup MySQL database?

  - by mouthpiec

  Is there a way to backup an MySQL database so that if something wrong occurs, it will be easy to recreate the tables with the same data?

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• Is it possible to run an alter on all my database objects to test them

  - by Khanzor

  I'm in the course of doing some schema migrations, and would like to know if it's possible or advisable to run every stored procedure, view and function in my database as an alter statement to "compile" them all to make sure nothing is completely broken.

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• MySQL, undo drop database

  - by Simone Margaritelli

  Hi guys. I've accidentally dropped a database inside my server . I have no backup of it and binary logs are not enabled (shame on me!) ... Is there any way to restore that db?

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• Is their any tool that can create Ruby on Rail migration script of existing Database

  - by changed

  Hi I wanted to know if their is any tool that can be used to create sql migration script of existing database in Ruby on Rails. Also is their any visual tool that can be used to write Ruby on Rails migration script.

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• Any gotchas in migrating database connectivity to DataSource?

  - by Everyone

  Looking at some old application code which uses explicit driver loading as Class.forName(...).newInstance I have been told to change this to use the Java 1.4.2 mechanism to establish a database connection using ContextLookup, and DataSource. Are there any gotchas I should be aware of?

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• how to monitor if the connectivity between the rails apps and mysql database is established

  - by anusuya

  How do we monitor that the connectivity between the rails app and the database is established. will rails try to re-connect the connection with mysql if it closes?

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• how can i store data from csv file to sql database in asp.net

  - by vksnd

  in my project i have existing csv file and all they have up to 20 lak records. and they all i store in my sql database. so plz help me how can i do this. i use sql bulk insert query but they didn't run in asp.net

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• [rails] do we need database level constraints

  - by shrimpy

  i have the same problem as in the following post http://stackoverflow.com/questions/1451570/ruby-on-rails-database-migration-not-creating-foreign-keys-in-mysql-tables so i am wondering, why rails do not support generate foreign key by default??? it is not necessary??? or we suppose to do it manually?

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• displaying decimal values from database in textbox

  - by simon

  Hi there! i just want to ask how to set the textbox so it will display decimal numbers. Couse now if i read a decimal number from my access database like 0,2 it displays only 0 Tnx for the help!

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• Error, could not create MachMessagePort for database doctor (com.apple.addressbook.migrationdaemon)

  - by user262998

  I'm working in address book for iphone. it generate address into UILabel. when I'm running the application everything goes well, but after showing about %30 of the addresses and sadenly stopped without any reason! Only in terminal shows: Error, could not create MachMessagePort for database doctor (com.apple.addressbook.migrationdaemon) starting in process migration Please help me!

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• Multiuser XML document "database" for asp.net app

  - by Pierreten

  I was thinking about a way to allow multiple users to get CRUD access to an XML document in an asp.net app. The operations would obviously have to be made under the assumption of a multithreaded environment. For perf reasons, would it make sense to cache the document, and use a mutex on that cached version? When would changes be flushed to the physical XML document? Any and all recommendations are appreciated (also "use a database" isn't an option at this point unfortunately)

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• How do I connect to MSSQL 2008 database in Java with JDBC

  - by shuxer

  I have MSSQL 2008 installed on my local PC, and my Java application needs to connect to a MSSQL database. I am a new to MSSQL and I would like get some help on creating user login for my Java application and getting connection via JDBC. So far I tried to create a user login for my app and used following connection string, but I doesn't work at all. Any help and hint will be appreciated. jdbc:jtds:sqlserver://127.0.0.1:1433/dotcms username="shuxer" password="itarator"

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• SQL Server Compact - count records/get space used for all tables in database

  - by Andy White

  Is there a way to get a record count or a space-used value for all the tables in a SQL Server Compact database file (SQL CE 3.5.1)?

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• Dataset to Database

  - by user181421

  Hello, I'm working with framework 2.0. I have a dataset with many rows that were entered by the user and I need to write them to the database. What is the right way to do it? TY

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• SQL Select statement that includes a column that isn't in the database

  - by Cypher

  I'm trying to execute a SELECT statement that includes a column of a static string value. I've done this in Access, but never with raw SQL. Is this possible? Example: Name Status John Unpaid Terry Unpaid Joe Unpaid In the above example, the "Status" column doesn't exist in the database.

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• Oracle Database Enforce CHECK on multiple tables

  - by GigaPr

  I am trying to enforce a CHECK Constraint in a ORACLE Database on multiple tables CREATE TABLE RollingStocks ( Id NUMBER, Name Varchar2(80) NOT NULL, RollingStockCategoryId NUMBER NOT NULL, CONSTRAINT Pk_RollingStocks Primary Key (Id), CONSTRAINT Check_RollingStocks_CategoryId CHECK ((RollingStockCategoryId IN (SELECT Id FROM FreightWagonTypes)) OR (RollingStockCategoryId IN (SELECT Id FROM LocomotiveClasses))) ); ...but i get the following error: *Cause: Subquery is not allowed here in the statement. *Action: Remove the subquery from the statement. Can you help me understanding what is the problem or how to achieve the same result?

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• contents of page reload when any user post data in database in php

  - by Mayan Alagar Pandi

  Hello Tech Jargons, I have developing messenger in php. In my application in need to reload the content of div in a page while any user post their comments on database of server. Please kindly help me... Thanks in Advance Mayan Alagar.

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• SQLite database creation fails, documentation is unclear

  - by Lars D

  When I add this code to my Android 2.1 Java app, it fails: db=SQLiteDatabase.openOrCreateDatabase("Locations", null); Do I need a special permission to create a database, or can anybody provide a suggestion how to find out what goes wrong?

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• Symfony - Delete and reload all database records for each test

  - by Andree

  Hi there, From the Jobeet tutorial provided in Symfony website, I found out that I can load fixtures data each time I run unit test by using this script: Doctrine_Core::loadData(sfConfig::get('sf_test_dir').'/fixtures'); However, I want to delete and reload all records from database each time I run a unit test. Currently, I'm doing this manually (Run symfony doctrine:build --all before each test). Can someone provided me a correct way to do this?

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• inheritance in document database?

  - by nils petersohn

  i am wondering because i searched the pdf "xxx the definitive guide" and "beginning xxx" for the word "inheritance" but i didn't find anything? am i missing something? because i am doing a tablePerHierarchy inheritance with hibernate and mysql, does that become deprecated for some reason in xxx? (replace xxx with the "not only sql" database you like)

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• How to create a huge Informix database?

  - by tabrez

  Can anyone provide me with a script for creating a huge database (for example, 2 GB of data) in IBM Informix Dynamic Server (IDS) version 11.50.FC4 on a Linux RHEL 64-bit machine?

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• Transport Database Query through Web Services without using Dataset

  - by Marty Trenouth

  Understanding that passing Datasets through web services is a bit heavy (and almost if not completely unconsumable to non .NET clients) what is the best way to prep database query results that don't map to known types for transport through web services in c#?

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• Indexing File Names To a Database

  - by Nathan Campos

  I have a folder with more than 2000 files and I need to index their file names on a database(MySQL) using Java, but how could I do this? PS: The MySQL connection part I already know.

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• Caching Mysql database for better performance

  - by kobey

  Hi, I'm using Amazon cloud and I've performance issue since the HDD is not located on my machine. My database is small (~500MB) and I can afford to keep it all in my RAM. I do not want to keep queries in my RAM, i need all the tables there. How can i do it? Thanks, Koby P.S. I'm using ubuntu server...

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• Rails: unit test fails with "No such file or directory....database.yml" error

  - by Drew Johnson

  When I execute a Rails unit test from the command line (as suggested here) such as ruby unit/test_model.rb ...I get this error: No such file or directory - .../test/config/database.yml (Errno::ENOENT) Am I doing something wrong? Or is there a workaround?

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