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 Related Questions Answered by Jey on 2005-05-08 17:27:45: ACID is releated to transactions. It is an acronyam of Atomic, Consistent, Isolation and Durable. Transaction must following the above four properties to be a better Latest Answer : Atomic-- should execute all or nothing...rollback come into picture Consistent--Consistency is a transactional characteristic that must be enforced by both the transactional system and the application developer Isolation -- transaction must ... Answered by Jey on 2005-05-08 19:35:35: There are three isolation levels in Transaction. They are 1. Dirty reads 2.Non repeatable reads 3. Phantom reads. Dirrty Reads If transaction A updates Latest Answer : Isolation levels are Dirty_Read, Non Repeatable read and phantoms. These are the inconsistancies which are occured in transactions. To avoid these inconsistencies , we have 4 types of attributes.TRANSACTION_READ_UNCOMMITED TRANSACTION_READ_COMMITED=== ... Answered by Jey on 2005-05-08 18:01:39: There are six transaction attributes that are supported in EJB. 1. NotSupported 2. Supports 3. Required 4. RequiresNew 5. Mandatory 6. Latest Answer : There are six transaction attributes that are supported in EJB. 1. NotSupported 2. Supports 3. Required 4. RequiresNew 5. Mandatory 6. Never ... Answered by Jey on 2005-05-08 12:59:41: Deployment Descriptor is a XML document with .xml extenion. It basically descripes the deployment settings of an application or module or the component. At runtime Latest Answer : Deployment Descriptor is a XML document with .xml extenion. It basically describes the deployment settings of an application . At runtime webcontainer reads the deployment descriptor and understands which .class file is mapped to the url-patteren ... If i throw a custom ApplicationException from a business method in Entity bean which is participating in a transaction, would the transaction be rolled back by container. Does container rolls back transaction only in case of SystemExceptions Answer posted by Mohan on 2005-05-21 17:21:54: yes the rollback will occur Latest Answer : The MDB is stateless and inherently each message is unique with respect to the MDB. Each message needs to be processed independently. Hence the need for separate transactions ... If my session bean with single method insert record into 2 entity beans, how can I know that the process is done in same transaction (the attributes for these beans are Required) If your method in the session bean is already running under a transaction the calls to any other bean which have been deployed with trans-attribute 'Required' will be executed within the same Latest Answer : Not Supported ... Read Answers (7) | Asked by : santhosh Latest Answer : Transaction will be propogated from web tier to EJB tier, when the client code (web tier) is already in the transaction and server method (EJB) which is getting called has some transaction attributes like required,supports,mandatory etc. ... Read Answers (2) | Asked by : venkateswara Reddy I have 2 session beans sb1 & sb2. In session bean 2 there is a bussiness exception occurs. If I don't want to rollback the transaction in sb1 which declartive transaction attribute I have to use in both beans? Read Answers (2) | Asked by : Sudhakar
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