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HTML table headers always visible at top of window when viewing a large table
... Hendy IrawanHendy Irawan
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MongoDB vs. Cassandra [closed]
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edited Oct 25 '18 at 17:04
Esteban Verbel
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What is aria-label and how should I use it?
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answered Feb 26 '14 at 11:50
Olly HodgsonOlly Hodgson
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Abstract functions in Swift Language
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edited Jan 8 '16 at 10:22
squarefrog
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What does the “at” (@) symbol do in Python?
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edited Oct 6 '18 at 20:02
user2357112 supports Monica
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Python module for converting PDF to text [closed]
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Felipe Augusto
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answered Aug 25 '08 at 5:21
David CrowDavid Cro...
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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