This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
In one scenario i want to display the data from two databases i.e, they r different database(MSAccess and Oracle). Im trying to use .properties in Java to load the database connections. pl reply ASAP. Regards
While with some DBs it is possible to retrieve data from two of them in the same query, there is no way to do that if you have two different kinds of databases. You will have to write two queries. It is possible to come up with a transaction that spans two different kinds of databases, but not if one of them is Access.
Actually, some databases allow you to configure a "gateway" or "bridge" or "link" to another database through it, sometimes even a different type of database. With such a thing configured, it then becomes possible to have a single query get data from 2 databases at once with a query in the style of:
However, this can create shall we say interesting performance problems and I wouldn't recommend it as a general solution.