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what is the use of architectural designthe architectural design explains the relationship among major structural elements of the software the design
what is meant by throw away prototypinggiving the user a system which is incomplete and then changing and augmenting it as the user requires become
define process specification process specification is used to explain all flow model processes that appear at the final level of refinementcheck amp
what is meant by data dictionarythe data dictionary is a prepared listing of all data elements that are pertinent to the system with precise rigorous
draw the context level dfd for the safe home softwareuser commands alarm typetelephonenumber tonesensor status
q explain multipurpose internet mail extensions- the multipurpose internet mail extensions is an extension of smtp that allows the transfer of
define behavioral modellingthe state transition diagram represents the behavior of a system by depicting its states and the events that cause the
q illustrate user agent servicesuser agent ua services - provide template for user to compose a message- reads incoming messages- allows a user to
q explain dynamic domain name systemddns - dynamic domain name system automatically updates the dns master file- sent by dhcp to a primary dns server
what is meant by information flow continuitywhen we refine a fundamental model for a system the information flow continuity must be maintained ie
q resolution of domain name system- mapping a name to an address or else an address to a name- resolver is a dns client used by an address to provide
define data flow diagrama data flow diagram is a graphical representation that depicts information flow amp the transforms that are applied as data
state entity relationship diagramerd depicts relationships among data objectsthe erd is the notation that is used to conduct the data modeling
define cardinality amp modalitycardinality requirement of the number of occurrences of one that can be linked to number of occurrences of
define data objects attributes amp relationshipdata object illustration of any composite information that must be understood by a software it can be
dns in the internet -domain name space is split into three sections country generic and inverse-generic domains define hosts by generic
state the primary objectives of analysis modelto explain what the customer needsto set up a basis for the creation of a software designto explain a
q what is domain names - full domain name is a sequence of labels separated by dots - fully competent domain name fqdn contains the full name of a
q define name space in domain name system- all names assigned to machines on an internet- must be unique either flat or hierarchical- flat name space
q explain about domain name system-in the past mapping of ip addresses was static using a host file-impossible in todays dynamic environment-domain
what are the principle stages of vord methodviewpoint identification identify the services given to each viewpointviewpoint structuring grouping
define requirement engineeringrequirement engineering is a process that includes all of the activities needed to create and maintain a system
write down the functional requirement for an library management systemthe user should able to search either all of the initial set of databases or
what are the types of software system requirementsfunctional requirements services the system should givenon-functional requirements constraints on
what is meant by system requirementsset out the system constraints and services in well explainedserves as a contract among the system buyer amp the