11. What are Super servers?
These are fully-loaded machines which includes multiprocessors, high-speed disk arrays for intervive I/O and fault tolerant features.
12. What is a TP Monitor?
There is no commonly accepted definition for a TP monitor. According to Jeri Edwards' a TP Monitor is "an OS for transaction processing".
13. TP Monitor does mainly two things extremely well. They are Process management and Transaction management.?
They were originally introduced to run classes of applications that could service hundreds and sometimes thousands of clients. TP Monitors provide an OS - on top of existing OS - that connects in real time these thousands of humans with a pool of shared server processes.
14. What is meant by Asymmetrical protocols?
There is a many-to-one relationship between clients and server. Clients always initiate the dialog by requesting a service. Servers are passively awaiting for requests from clients.
15. What are the types of Transparencies?
The types of transparencies the NOS middleware is expected to provide are:-Location transparencyNamespace transparencyLogon transparencyReplication transparencyLocal/Remote access transparencyDistributed time transparencyFailure transparency andAdministration transparency.
16. What is the difference between trigger and rule?
The triggers are called implicitly by database generated events, while stored procedures are called explicitly by client applications.
17. What are called Transactions?
The grouped SQL statements are called Transactions (or) A transaction is a collection of actions embused with ACID properties.
18. What are the building blocks of Client/Server?
The clientThe server andMiddleware.
19. Explain the building blocks of Client/Server?
The client side building block runs the client side of the application.The server side building block runs the server side of the application.
20. The middleware buliding block runs on both the client and server sides of an application. It is broken into three categories:-
Transport stackNetwork OSService-specific middleware.
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