The Design of ILOG CPLEX in ILOG Concert Technology

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Figure 4.1 illustrates the design of ILOG Concert Technology and how a user program uses it. ILOG Concert Technology defines a set of interfaces for modelling objects. Such interfaces do not actually consume memory (this is the reason the box in the figure has a dotted outline). When a user creates an ILOG Concert Technology modelling object using ILOG CPLEX, an object is created in the ILOG CPLEX database that implements the interface defined by ILOG Concert Technology. However, a user application never accesses such objects directly but only communicates with them through the interfaces defined by ILOG Concert Technology.