Various systems and methods for detecting a deviation of an existing connectivity of a data center from a pre-determined connectivity are presented. One method involves detecting a deviation of an existing connectivity of a data center from a pre-determined connectivity by defining a start node. The start node is defined based on a condition of a component of the data center. The condition is determined based on an explicit relationship between a node and another node of the data center. The method involves conditionally matching a sub-graph and a portion of a main graph by identifying the deviation. The conditional matching is begun at the start node. A failure to conditionally match a portion of the sub-graph and a portion of the main-graph indicates that the deviation exists.