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q. describe how an er schema can be represented by relation schemas and constraints arising from er design can be mapped to constraints on a relation
q. what is relational algebra and calculus? explain the relational algebra operators - selection and predicate set operation joins and
q. define a weak entity set and its identifying relationship. list the necessary conditions for a meaningful identifying relationship set of a
q. with the help of a suitable diagram gives module wise explanation of system architecture of dbms.sol. a database management is a collection of
medium earth orbiting satellite is an orbit which is located just above the few hundred miles to a few thousands above the earth surface. it is of
low-earth orbiting have more advantageous in mobile based communication devices like pdas cell phones and automobile communications. the low-earth
geo stationary satellitethe satellite which is known as earth-orbiting satellite is called geo stationary satellite. the geo stationary satellite is
describe circuit switching packet switching and virtual circuit packet switching. explain their suitability for different applications such as
circuit switching is a term used in communication where the communicating nodes will be connected through a dedicated channel before any
what is multiplexing and demultiplexing? explain.describe time division frequency division and wavelength division multiplexing.what is adsl? how
skype is a web-based service which offers cheap and free phone calls. explain step by step in terms of networking technology what really happens from
name various types of guided and unguided transmission media. if you are connecting your office computers through a local area network which
the network layer is used to route physical data to the destination point it decides the actual path from where data travels to destination point.
the transport layer implements reliable data transport services. the various functions of transport layer are listed belowthe transport layer is
in distributed data processing explain two scenarios where vertical partitioning and horizontal partitioning are used.distributed data processingthe
a udp header does not have sequence number and acknowledgement number fields. is it an advantage or a disadvantage? explain your answer in
how do you get the complexity of an algorithm?what is the relation bw the time amp space complexities of an algorithm? justify your answer with an
what is an algorithm? what are the characteristics of a good algorithm? an algorithm is defined as a step-by-step procedure of
4.describe priority scheduling algorithm. consider the following set of processes. show the order in which the algorithm will schedule these
what is riged body transformation matrix? show that the composition lf two rotation is additive by concatenating the matrix representation of r
what is homogeneous coordinate? discuss the composite transformation matrix for two successive translations and scaling.in design and picture
what are the uses of homogeneous coordinates? convert translation rotation and scaling in homogeneous coordinates. in mathematics homogeneous
what are the side effects due to scan conversion? how can the effects be minimized?aliasing effects side effects of scan conversion scan
write a polygon clipping algorithm to clip a polygon against rectangular clipping are.read the vertices of polygon to be clipped. 2. read the
describe any two methods for drawing thick lines. two method for drawing thick lines are 1 using the line- width command setline width scale factor