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define the terms 1 physical schema 2 logical schemaphysical schema the physical schema explains the database design at the physical level which is
define instance and schemainstance collection of data stored in the data base at a certain moment isschema the overall design of the data base is
give the levels of data abstractionthere are three levels of data abstractiona physical levelb logical levelc view
what are the advantages of using a dbmsthe benefits of using a dbms area controlling redundancyb restricting unauthorized accessc giving multiple
what are the disadvantages of file processing systemthe drawbacks of file processing systems area data redundancy and inconsistencyb complexity in
list any eight applications of dbmsa universitiesb airlinesc bankingd credit card transactionse tele communicationf salesgfinanceh manufacturingi
define database management systemdatabase management system dbms is a set of interrelated data and a combination of programs to access those
functions and features of the ipmonitor program are as follows a this program should be able to list out detail information of ip traffic
explain the request or response interfacethe requestresponse interface is ideal for a message based client-server interaction by modeling components
explain the communications of request or response interfacethe inter-application communication must provide four specific interface to the
explain the requestresponse interface many issues are involved in providing a procedural interface for client functions to interact with server
define server processing with queuesthe efficient server processing of client request is essential for optimized client- server applications this
explain processing predefined application protocolsimplementing and swift processing of predefined application protocols is sure to improve
define the client - server communications environmenttodays client - server communications environment offers programmers great flexibility for
define middleware to ease the low-level protocol burdenfortunately many products are available today to ease the low-level protocol burden on the
explain the network protocolsthere are a wide variety of network protocols to choose from traditionally client - server developers were required to
define the communications techniques - application interaction protocols communications techniques are well defined they give developer the
explain the application interaction protocolsapplication interaction protocols are uniquely defined for each program and are used to logically
managing the interaction of client and server among the differences between traditional application programs and client server ones is that
define enforcing modularity for cadditionally in c it is sometimes necessary to create modularity of design c is very natural model for component
removing system dependenciesbecause portions of the client - server application program may execute on different machines it is very important for
explian integrating a requestresponse mechanismtraditional application developers will need to develop a mechanism for communication between
define maintaining data on a per client basisperhaps the most dramatic syntactical programming change for the application developer of client ndash
question discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized
define coding in an independent service architecture coding in an independent service architecture alleviates many of the traditional dependencies of