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Structure of Client Server Systems:In client/server architecture, clients show users who require services while servers give services. Both client and server are a combination of hardware & software. Servers are divided logical objects that communicate with clients over a network to do tasks together. A client makes a request for a service & receives a reply to that request. A server gets & processes a request, and sends back the needed response. The client/server systems may have two different types of architecture -
2-Tier and 3-Tier Client/Server Architectures
Each client/server application contains three functional units:
These functional units can reside on either the client or on one or more servers in the application:
Figure: A client-server system
Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
Question: In a multi-user database environment, locking mechanisms can be used to solve the three basic problems of concurrency. On the other hand, however, locking may also le
. Ashutosh Dubey who is the director of Gyan Gurukul want a three-level schema architecture for the Gyan Gurukul Company that provide better security also design a data abstraction
Differentiate between static hashing and dynamic hashing. Ans: Static Hashing comprises the number of primary pages in the directory fixed. So, while a bucket is full, we requ
Illustrate the State model for the ATM class let us take state model for the ATM class given below in Figure showing state model of the ATM class and the pseudo code derived fr
Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following
What is called remapping of bad sectors? If the controller detects that a sector is injured when the disk is initially formatted, or when an attempt is made to write the secto
Explain the challenges before an E-business management.
Explain CNT in the respects of QBE ? CNT: It is one of the aggregation commands given in QBE. It is used to identify number of tuples
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
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