In our application, we have to access data from various tables from different databases residing in separate MariaDB Server using Stored Procedure (Linked Server in SQL Server). It is compulsory in our architecture to keep databases in different servers.
Looking for something like Linked Server of MS SQL.
For e.g. stp_A on Server A referring and fetching data from table B on Server B. another case is stp_X from Server B referring and fetching data from table X from Server A.
How can i achieve the same in MariaDB?
Regards,
Saumik
I have one server installed locally and other is company,s live server. I have an application installed on local machine, so whenever I run my application data on both SQL Server instances (local and live) should sync to keep same database on both servers how this can be done live database in cloud server with public ip and local databases are in my local system. I would be happy if anyone could provide sample format for this using asp.net C#
Why don't you use SQL Server Replication.
My client wants to change servers from the application, I mean enter new SQL servers name from application and search keywords in the SQL server database tables. I have Stored Producer which is working fine for one SQL server.
If client changes SQL server name in the application level then My connection string in the application will not work. Because database in the connection string that I used is available for one server.
How can I handle this situation? . Is there anyway sp that will be dynamic? P
Well in one server you could create a synonym that points at the other server. Assuming you have linked servers, on Server1:
CREATE SYNONYM dbo.ProcedureName FOR Server2_Linked.DatabaseName.dbo.ProcedureName;
Now when the app calls dbo.ProcedureName in Server1, unbeknownst to it, it is actually executing on Server2.
If this isn't what you're after I think you'll have to elaborate in your question a bit.
I'm trying to place a .mdf database on a Computer A and access it simultaneously on Computer B but I'm having an error that says I cannot access the mdf file because it's being used by another process.
The setup is, the database is hosted on a Public folder in Computer A. I have Visual Studio running on both computers, and Computer B accesses the database on Computer A.
Computer A Connection path string:
C:\Users\Public\database.mdf
Computer B Connection path string:
\192.168.254.8\Public\database.mdf
Is there some sort of setting that I do not know of to enable multiple access on a db? Or this is not possible?
EDIT:
Let me rephrase my question, sorry.
There are two computers connected via a network, and I want to access one Visual Studio solution/project website. I wanted to do this as a demonstration, is it possible?
You should have an instance of SQL Server (even express) running on the host machine.
All requests from the clients should use the standard mechanisms for connecting to that server instance. In other words, they won't run their own copy of SQL Server, instead they will connect to the instance running on the host machine.
Simultaneous or direct access to Database files under any DBMS control either a very bad practice or simply impossible.
Use proper DBMS tools to access the data.
And yes - its possible to access Web site project for demo.
Install SQL Server on the host machine (the one that you want to keep your database on).
Then in Visual Studio, use the "Server Explorer" to locate the remote instance of the database. From there, you can utilize the remote instance of SQL Server in your connection string, thus allowing you to connect multiple computers to a single database.
Using two instances of SQL Server to connect to the single .mdf file is a very bad practice.
Instead of specifying the MDF file in your connection string (which, I believe, uses a form of User Instancing), you should use SQL Server Management Studio (SSMS) to attach the MDF. Then connect to SQL Server, rather than to the MDF.
You may need to move the MDF and LDF files to a place where the SQL Server identity can access them, rather than keeping them in your VS project.
Most projects keep scripts to create the DB in their VS project, but not the binary MDF itself.
When you deploy, the process is similar: use SSMS to attach the MDF on your server.
Yes, If 2 or More Computers are connected by networks like LAN You can access the Database Database1.mdf (say) from another SQL Server by entering its user name / Password /by Visual studio connection.
Disadvantages:
If more than 7~8 systems are accessing same Database same time System response slows down and Hangs up or may result error like connection pool exceeded or Device not responding..
In Big Companies they use Huge Multi-core & Multi-Processer based sever which will respond faster.
Overcome: while writing Applications Use Connection Open and Close Particularly while executing the SQL queries in other time it should be closed.
Best Programer uses Transaction instead of using normal methods. Transaction Makes Every User Access Database With valid and successful Execution of queries. These Queries (Transaction Queries) mainly executes on client machine and later updates the same over Main server when it got Time slot for it(synchronize).
I have a central webservice over the internet which gets different information from different softwares and stores them in a Sql server 2008R2 database.
In addition to webservice some windows applications exist in different cities which all of them have local databses.
Now I wanna have replication between these local databases and the central database. but there is no any direct connection as like as "VPN" between local databases and central database.
so how can I do something like replication or synchronization between local databases and central database over the internet.
I'm thinking about sending local databases via web service. what is your idea?
My local databases are Sql server 2000 version
How about log shipping? You can even use FTP (FTPS--FTP over SSL, for security) to send the logs to be later on applied to the central DB. Since you have SQL 2000, you'd have to restore data to a copy of the DB in "restore" mode and then merge with central DB using SQL.
Also, from personal experience--if setting VPN is costly, you can consider using SSH. Free implementations for Windows exist, and they do a good job for secure file copy, just like FTPS.
I wouldn't use a webservice for this purpose, especially if the amount of data is large.