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How to connect multiple database in java

I am working on projects where I wanted to connect multiple database to a single application it is possible or not if possible them how.

20th Apr 2019, 3:21 PM
Pratik Mohite
Pratik Mohite - avatar
1 Réponse
0
Primary Keys A primary key is a field in the table that uniquely identifies the table records. The primary key's main features: - It must contain a unique value for each row. - It cannot contain NULL values. For example, our table contains a record for each name in a phone book. The unique ID number would be a good choice for a primary key in the table, as there is always the chance for more than one person to have the same name.
30th Apr 2019, 4:22 AM
MohammadAllah Bahauden Zada
MohammadAllah Bahauden Zada - avatar