Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
the cross-section of twisted pairthe cross-section of each and every strand of the twisted pair is pi4 square mm a 10-km length of this type of
explain the term- signal-to-noise ratio a signal-to-noise ratio of 20 db means that sn 100 as log2101 is around 6658 the shannon limit is around
explain how the object classes are mapped to tableseach object class maps to one or more than one tables in the database the objects in the class may
what are the advantages and disadvantages of merging an association into a class advantages i less number of tablesii faster performance due
what are the advantages of object idthe main advantages of object ids are as belowi ids are not changing ii ids are completely independent of the
what is an object ideach class-derived table has an id for primary key one or more object ids form primary key for association derived tables an
what are advantages of object modelsobject models are efficient for communicating with the application experts and reaching a consensus about the
what is the main advantage of the object model what are its different componentsthe object model focuses on the logical data structures each object
what are the different integrity constraints in rdbmsthe various integrity constraints in rdbms are asprimary key primary key is a grouping of one or
what are the different approaches for database designthere are two basic approaches for database design which are as followsattribute driven it
what are three components of the schema architecture proposed by ansisparcthe three component schema architecture proposed by ansisparc is as given
what are the advantages of object oriented databases in comparison with others why it is still not widely usedobject oriented designs are coherent
what are the different strategies of implementation of the statecharts there are two strategies for implementation of state chartsi basic
what is serialization where it is used and why serialization is a basic term used for mechanisms which enable objects and object structures to be
what do you mean by persistence how you will make your data persistentpersistent data is the data which has a longer lifetime than program which has
discuss how the bi-directional implementations are madein bi-directional implementation of the association a pair of references must implement every
discuss how the one-to-one associations have to be implementedsome of properties of associations can be implemented directly by providing suitable
what are the two distinct aspects to the implementation of associationsi it is required to define data declarations which will enable details of
what is the difference between link and referencethe fundamental difference between links and references is that links are symmetrical on the other
what are object interaction diagramsobject interaction diagrams are the diagrams that used to describe order in which messages are communicated in
what is the most significant feature that does not directly map into programming language structures whyassociation since there are complex types of
explain the use of constraints in functional model with suitable examplea constraint shows relationship between two objects at same time or
define the term- actors and data storesactors an actor is the active object which drives data flow graph by producing or consuming values actors are
explain the term- data flowsdata flows a data flow connects output of an object or process to input of another process or object it represents an
determine the concept of processprocess a process transforms the data values it is represented as ellipse containing a description of transformation