Oracle Call Interface
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The Oracle Call Interface (OCI) is a set of low-level APIs (Application programming interface calls) used to interact with Oracle databases. OCI programs are normally written in C or C++, although they can be written in almost any programming language.
There is a better library for programs written in C++. It is called Oracle C++ Call Interface (OCCI). The OCCI provides object oriented interface with the Oracle Object Relational Database.
As Oracle puts it : So reliable that every SQL statement in the Oracle Database executes with OCI.
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