Technology Questions

There will always be a default constructor in every class 

Call transaction

The synchronized keyword indicates that a method can be accessed by only one thread at a time

A stub network has only one default path to non-local hosts and no outside network knowledge. Non-local stub network traffic uses a single logical path when traveling in and out of the network.

Stub networks are essentially local area networks (LAN) that either do not connect to the outside and relay data packets internally or are dead-end LANs that know of only one network exit. Stub networks may have multiple connections but use one path to single points of destination.

Hence, a stub network is a network that has only one entry and exit point.

Platform independence means that we can write and compile the java code in one platform (Eg Windows) and can execute the class in any other supported platform (Eg Linux,Solaris,etc).

With the help of RTTI, We can get the information about the data type at the runtime.

SE01 is the main screen of the Change and transport Organizer. From here the administrator can acheive all tasks related to transport requests - such as create, change, view logs, display client/delivery transports, etc. SE09 and SE10 can also be accessed from here. However, not all developers might be granted access to this transaction.

SE09 is the workbench transport requests transaction - here the developers can track changes to all ABAP workbench objects (dictionary, reports, module pools, etc). This is a developer-specific transaction and mostly all developers have access to this transaction.

SE10 is the customizing request display transaction - this displays all the customizing requests in the system. Again, this could be restricted to Business analysts if required, since they would be doing most of the customizing changes in the system.

Control File is used for:
- Database recovery.
- Whenever an instance of an ORACLE database begins, its control file is used to identify the database and redo log files that must be opened for database operation to go ahead.