impedance mismatch

plural impedance mismatches

1. object-oriented programmingA set of conceptual and technical difficulties that are often encountered when a relational database is being served by an object-oriented application program, particularly because objects or class definitions must be mapped to database tables defined by a relational schema.

   Why does a technological impedance mismatch exist?

   2004, Scott W. Ambler, The Object Primer: Agile Model-Driven Development with UML 2.0, Cambridge University Press, →ISBN, page 442

   2 more examples

   Some argue that having impedance mismatch is difficult for programming intensive applications.

   1997, Bhavani M. Thuraisingham, Data Management Systems: Evolution and Interoperation, CRC Press, →ISBN, page 33

   But the impedance mismatch between SQL and Java was no better than between SQL and other languages.

   2002, Jim Melton, Advanced SQL:1999: Understanding Object-Relational and Other Advanced Features, Morgan Kaufmann, →ISBN, page 353