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What's wrong with foreign keys?
I remember hearing Joel Spolsky mention in podcast 014 that he'd barely ever used a foreign key (if I remember correctly). However, to me they seem pretty vital to avoid duplication and subsequent data integrity problems throughout your database.
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Which is preferred: Nullable.HasValue or Nullable != null?
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answered Mar 24 '09 at 3:34
Rex MRex M
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How to map a composite key with JPA and Hibernate?
...EmbeddedId
select t.timePK.levelStation from Time t
References
JPA 1.0 specification
Section 2.1.4 "Primary Keys and Entity Identity"
Section 9.1.14 "EmbeddedId Annotation"
Section 9.1.15 "IdClass Annotation"
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Design Patterns: Abstract Factory vs Factory Method
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What is the difference between an int and an Integer in Java and C#?
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Fred
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answered Aug 2 '08 at 21:55
MattMatt
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Surrogate vs. natural/business keys [closed]
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Both. Have your cake and eat it.
Remember there is nothing special about a primary key, excep...
How to determine when a Git branch was created?
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edited Mar 12 '19 at 20:24
Robert Mikes
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answered Feb 12 '10 at...
Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
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answered Oct 10 '08 at 1:09
Tall JeffTall Jeff
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How to differ sessions in browser-tabs?
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edited May 19 '09 at 15:02
answered Dec 15 '08 at 15:40
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What exactly are unmanaged resources?
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answered Aug 8 '10 at 5:35
Andrew RussellAndrew Russell
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