Definition :
The Object Constraint Language is a declarative language describing rules applying to Unified Modeling Language models developed at IBM and is now part of the UML standard. Initially, OCL was merely a formal specification language extension for UML.
Further Reading :
Book : Applying UML and Patterns by Craig Larman.
Definition :
Object-relational mapping in computer science is a programming technique for converting data between incompatible type systems using object-oriented programming languages. This creates, in effect, a “virtual object database” that can be used from within the programming language.
Further Reading :
Book : Applying UML and Patterns by Craig Larman.
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