Always when I want to use a programme that is using a MySQL database, it forces me to install a MySQL connector or mysql-connector-java.jar.
Why do I need a MySQL connector and how does it work??
JDBC is a library used by your Java programs to access relational databases. You can use it to access Oracle, Informix, Microsoft SQL Server, PostgreSQL, DB2, and other makes of database server, as well as MySQL.
The MySQL connector is a library for, well, connecting JDBC to the MySQL database. If your program were using Oracle, you would use the Oracle connector instead.
This is necessary because each make of database server has its own specific protocol for transporting requests to, and results from, the server to application programs.
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I have been trying to connect to the server on Microsoft SQL Management Studio using Workbench via an IP.
But I cannot seem to connect whatsoever, is workbench even supported with Database engine servers.
I am connecting with the root username, could that be the problem too?
If you are referring to MySQL Workbench and SQL Server, MySQL is a visualization tools for MySQL Server and databases. You cannot access other servers with it. SSMS or SQL Server Management studio is the visualization tool for SQL Server databases. These both databases use almost similar syntax and structure but are totally different entities in terms of Parent Company and access.
In Layman's terms, when you try to enter an IP in Workbench, it tries to find and access a MySQL Server but doesn't find it and hence does not connect. It is not a SSH Client which connects to any server specified.
There is one way to connect SQL Server from MySQL Workbench and that is database miration.
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I recommend SQL Server Management Studio for SQL Server Access and visualization.
For connecting to SQL Server using Python, consider PyODBC (preferred) or pymssql as documented here
I have a MySQL file that I would like to explore using sqltool. I do not want to deploy a MySQL database because I only need to run a few queries on the data; I do not need persistence.
I understand that sqltool will allow me to create an in-memory database and run queries on it. This is perfect for my use-case, but how do I make it accept the MySQL dialect of SQL?
Additionally, is the process the same for other dialects such as Postgres SQL?
You need to deploy a MySQL database.
The HSQLDB SqlTool allows you to connect to a MySQL server using the MySQL JDBC driver, or to any other database server such as PostgreSQL using the relevant JDBC driver.
The SqlTool also allows you to create an in-memory database when used with HSQLDB, but this type of database is different from a MySQL database.
From https://learn.microsoft.com/en-us/sql/tools/sqlcmd-utility
sqlcmd uses ODBC to execute Transact-SQL batches.
I wonder what APIs are used by the command line clients of mysql, postgresql, and Oracle sql. ODBC, JDBC, or ...?
Thanks.
Each of the databases you mention use their own protocol for client-server communication.
For MySQL and PostgreSQL these are documented, while as far as I know Oracle's protocol is not published.
I've been wondering what are the benefits of using an ODBC driver to interface with a MySQL server? What advantage does that have over directly connecting to the server via TCP and firing off your SQL commands directly?
I'm working with a code base written in labVIEW that references a UDL file which references a data source and its associated ODBC driver to handle the connection to the server. I'm not yet convinced its necessary. I can see the benefit of using a driver if you are connecting to Microsoft Access or excel but if your recipient is an SQL server of some type why would you need a middle man to handle your SQL commands?
I have used the ODBC driver 3.51 for connecting to MySQL Community Server 5.1 for some time now. The ODBC driver allows you (on a Windows computer) to add your MySQL connection to the ODBC data sources list. Now you can reference this data source in many compatible applications. I have been able to use this ODBC connection in VB.Net applications as well as proprietary applications for printing and other functions with ODBC functionality.
I would say that when coding web or python applications i always use the built in MySQL packages, but if you need to access your data through VB.Net or another proprietary application (like a stand-alone windows app) you probably need to set up a system ODBC data source to access your database. To me the ODBC lets Windows access MySQL easily. Without Windows i don't think you need it.
Why ODBC and not JDBC? Some reasons come to mind in order of helpfulness when using JDBC:
Standard api to access the results from a query. To iterate over the results and to get the actual values with the appropriate type.
No need to know how the protocol works to connect to the server. Just use the host, user, password, send the SQL and iterate over the result.
Abstract out the connection to the database. Changing the database should be simpler.
Standard way to commit and rollback for transaction based changes.
In my experience, JDBC is very verbose. You need to write many lines to accomplish simple things. I've found the Spring JDBCTemplate wrapper to be an extremely easy to use alternative for simple stuff.
Can any one suggest me if there is a way to connect Oracle from MySQL please.
At the moment, no.
MySQL supports FEDERATED storage engine which is similar to Linked Servers / Remote Servers used by another systems, but as for the moment, it only supports remote MySQL servers.
There is a way to connect MySQL from Oracle, though, using Oracle Database Gateway.