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in the er diagram one example of subclassing is depicted following the services entity the subclasses item based and time based are created the
an example of a weak entity is staff because the availabilityid cannot be uniquely identified unless it is used in conjunction with the foreign key
1staffstaffid firstname lastname availabilityid experience phone mobile email2availabilityavailabilityid monday tuesday wednesday thursday friday
1item based services will be charged fixed prices and time-based will be charged variably depending on time such as per houritem-based fixed pedicure
a database has been designed for this beauty parlour in order for the staff to manage specific things such as bookings made by clients payments staff
you are required to design and build a data martdata warehouse using oraclea national bank allocates funding every year for its local branches to
a what does the cd mean in the csmacd how is it implemented in the ethernet b consider an ethernet hub with 8 ports and an ethernet
in slotted aloha system it has been measured that 70 of slots are occupied by frames ie the remaining slots are empty a how many frames need
consider a subnet with subnet prefix 10110110124 a if you subdivide the subnet into four equal size subnets what are their prefixes give all
a a host is sending a http request to a http server in the table below propose a correct set of source and destination port numbers for segments
a which of the well-known internet applications uses a separate tcp connection for control b the separate control connection as in a
assume that a user wants to download from a server a web page that references 3 objects the base page and each of the objects are of the same size
two hosts are connected by a path made of four links as shown in the figure below the links are of data rate r 2 mbps each host a has a file of size
a data link is shared by 20 data sources each source is active only 10 of the time and produces 1mbps data rate when active the sources start their
consider a simple wireless data link using channel bandwidth of 40 khz the transmit power level is 20 dbm the link attenuation is 40 db and the snrdb
an anagram is a type of word play the result of rearranging the letters of a word or phrase to produce a new word or phrase for example the anagram
lalr parserrule table - contains definitions of production rules within the grammarattributescount - number of production rules in the tablechild
lexical analyzersymbol table - holds the symbols accepted by the lexical analyzer or parser each symbol may be a terminal or a non-terminal
people arrive at a barber shop at the rate of one every 45 minutes if the shop is full it can hold five people altogether 30 of the potential
use an insertion sort to sort an array sequence of long word integers the size of the list will appear just before the list itself use the same
you are to develop a clinic system 1 identify and briefly explain the objects classes methods and attributes for the clinic system2 draw a use case
- alice bob and charlie have a secret key a3 b4 c5 in that order- they would like to find a common secret key using diffie-hellan key exchange
linear programmingconsider the following optimization problemmin xst x ge maxa1 a2 anrewrite this problem as a linear programming problem what is
consider the following lp problemmin x1 3x2 x3 -x4st x1 x2 x3 x4 ge 0x1 x2 -x3 -x4 ge 1x2 x3 ge 0 x1 x4 le 01 unique primal-dual solutions find a
the clue-less system shall be available to all users on the internet 95 of the time between 500pm and midnight local time and 90 of the time between