14. The system of claim 7 , wherein the operations further comprise executing one or more nodes of the execution tree associated with generating a connection amongst a first instance token and a second instance token in the token database.
14. The system of claim 7 , wherein the operations further comprise executing one or more nodes of the execution tree associated with generating a connection amongst a first instance token and a second instance token in the token database. 15. The system of claim 14 , wherein the operations further comprise: writing a connection entry to a body block of the first instance token, the connection entry including a reference to a head block of the second instance token; validating the connection entry against a relation token that references the connection entry to determine whether the second instance token is referenced by a target token of the relation token, the target token being one of a class token and a cluster token; and validating whether one or more connection options included in the relation token are satisfied, the relation token being associated with the connection.