Is there a way to connect Oracle from MySQL - mysql

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.

Related

Connect to local MySQL Workbench DB via sqlplus

I'm trying to learn PL/SQL language. On my mac laptop (macOS Monterey, M1) I have the following set up:
MySQL Workbench running a test database
and SQL*Plus installed in the terminal
My question: How do I connect to my local MySQL Workbench database via sqlplus?
I imagine I need a user/pass and to specify localhost 3306 as the connection endpoint... but where do I find these things, how do I set them up? I've looked at Oracle documentation but haven't found the answer.
Any help would be greatly appreciated! This is study for a SQL interview. Thanks in advance.
-Sebastian
Either you need to use MySQL Workbench as a client for MySQL Server, or else you need to use SQL*Plus as a client for Oracle Server. These are two different brands of database (although they are both owned by Oracle Corporation) and the clients cannot connect to each other's database.
Your statement of connecting to MySQL Workbench using SQL*Plus makes no sense anyway, since both of these are clients.

Why do I need a MySQL connector in Java?

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.

Using federated tables to connect MySQL to MSSQL

Can I use federated tables to make the integration of mysql and mssql ?
I tried and it worked mysql to mysql , but if I try to connect to mssql , do not work.
Thank You.
As per MySQL 5.7 Reference Manual - 15.8.1 FEDERATED Storage Engine Overview:
The local server communicates with the remote server using MySQL client C API functions.
... which, naturally, can only connect to mysqld.
MySQL Workbench - Database Migration: Microsoft SQL Server to MySQL gives an overview of options to transfer data between mssql and mysql. They can be summarized as:
Access mysql from mssql through ODBC by adding the former as a "linked server"
Transfer data between the two (either direction) with IDEs (by hand, i.e. one-time)
Transfer data between the two (either direction) with a program that can access both, possibly including data conversion

Oracle's database link allows user to query on multiple physical databases

I am looking for a solution or workaround in which MySQL will communicate with other Databases such as oracle, postgrey, MSSQL etc
Is there any way ?
I think that is not possible in native MySQL.
I was read about it, but I didn't try an experimental FEDERATED_ODBC engine:
http://capttofu.livejournal.com/3152.html
The official FEDERATED Storage Engine only allow to connect to another MySQL database servers.

Connect TO Sql Server From MySQL

How can I connect to a SQL Server Database from a MySQL Server? I need to use the MySQL as a proxy DB (querying all the SQL servers and MySQL connected to it).
I need a functionality sort of "linked server" one on SQL server.
You can't - the closest MySQL has is the FEDERATED engine, but it only supports connecting to other MySQL instances, not any other database vendor.
Only SQL Server's Linked Server and Oracle's Database Link technology support connecting to other database vendors (that I'm aware of), so you'd have to use SQL Server as the proxy to MySQL -- not the other way around.