Are PostgreSQL column names case-sensitive?
I have a db table say, persons in Postgres handed down by another team that has a column name say, “first_Name”. Now am … Read more
identifier
What are “connecting characters” in Java identifiers?
I am reading for SCJP and I have a question regarding this line: Identifiers must start with a letter, a currency character ($), … Read more
Hibernate throws org.hibernate.AnnotationException: No identifier specified for entity: com..domain.idea.MAE_MFEView
Why am I getting this exception? package com.domain.idea; import javax.persistence.CascadeType; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.JoinColumn; import javax.persistence.OneToOne; import javax.persistence.Table; import org.hibernate.annotations.AccessType; /** … Read more
Is main a valid Java identifier?
One of my kids is taking Java in high school and had this on one of his tests: Which of the following is … Read more
What’s the Hi/Lo algorithm?
What’s the Hi/Lo algorithm? I’ve found this in the NHibernate documentation (it’s one method to generate unique keys, section 5.1.4.2), but I haven’t … Read more
What is the meaning of single and double underscore before an object name?
Can someone please explain the exact meaning of having single and double leading underscores before an object’s name in Python, and the difference … Read more