Method for managing a hybrid distributed database in a communication network

A method for performing an operation at a distributed database for at least one transaction sent from an application in a communication network, the method comprising the steps of:

• receiving at a scheduler the operation related to the at least one transaction from a transaction manager;
• if the scheduler is a pessimistic scheduler:
• requesting at the pessimistic scheduler a read/write lock from its associated transaction manager;
• determining at the pessimistic scheduler if there is a conflict for the operation:
• if there is a conflict for the operation, the pessimistic scheduler requests a read/write lock for the transaction until obtaining the read/write lock;
• if not, the pessimistic scheduler obtains the read/write lock;
• if the scheduler is an optimistic scheduler:
• determining at the optimistic scheduler an operation type;
• determining at the optimistic scheduler if there is a conflict for the operation;
• and
• if there is a conflict the optimistic scheduler determines an operation type until determining that the operation is not in conflict with an operation of another transaction.