Pergunta de entrevista da empresa Interface Infosoft Solutions
What is Procedure in Database? What is an index in Database? The difference between Primary Key and Unique Key? The difference between JDBC and Hibernate?
Resposta da entrevista
Sigiloso
19 de out. de 2017
In a table , there can only be one Primary key which cannot be null whereas Unique key can accept only one null value .