Definition ∞ A dependency graph is a directed graph that illustrates the relationships between different components or tasks, where an arrow from one node to another signifies that the former must be completed before the latter can begin. In software development and blockchain systems, this graph visualizes how various modules, functions, or smart contracts rely on each other. It helps in understanding system architecture, identifying potential bottlenecks, and managing execution order. This visualization aids in complex system design.
Context ∞ Within blockchain protocol development and smart contract security, constructing a dependency graph is essential for verifying the integrity and logical flow of complex systems. Security auditors use these graphs to trace function calls and external contract interactions, pinpointing potential attack vectors or unexpected behaviors. The clarity provided by a dependency graph aids developers in maintaining robust and secure decentralized applications. Such analysis is a key component of preventing smart contract exploits.