Introduction to Cardinality and Modality
Elements of data modelling such as data objects attributes and relationships provide the basis for understanding the information domain such as what are the composite information s, its properties and how are they interrelated but such information is not sufficient. For example we can say that where are two data objects A and B with attributes a1,a2,a3..............an and b1.b2,b3...........b m respectively. They are related to each other by relation R as shown in fig 4.3
This information is not sufficient. We must also know how many elements of A are related to how many elements of B by relation R. This concept is called cardinality. There may be some cases when a defined relationship is not mandatory. This concept is called as modality.
Cardinality: Cardinality is the specification of number of occurrences of one object that can be related to number of occurrences of another object. It is usually expressed as either one or many. It generally defines the maximum number of objects that can participate in a relationship. On the basis of cardinality a relationship can be one to one (1:1) one to one (1: M) many to many (M-M).
Modality: Modality of a relationship is represented by 1 if it is mandatory 0 if it is not mandatory.
Latest technology based Software Engineering Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Cardinality and Modality homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Cardinality and Modality, project ideas and tutorials. We provide email based Cardinality and Modality homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Cardinality and Modality. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Software Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the software engineering assignments, which may help you to solve your complex issues of Cardinality and Modality. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
theory and lecture notes of shifting, reflecting and stretching graphs all along with the key concepts of translations, shifts, scales, reflections, digression, normal & inverse behavior, effect on domain & range. tutorsglobe offers homework help, assignment help and tutor’s assistance on shifting, reflecting and stretching graphs.
Synthesis and Reactions of Coumarins tutorial all along with the key concepts of Physical and Chemical Properties of Coumarins, Reactions of Coumarins, Resonance structures of Coumarin and Synthesis of Coumarins
www.tutorsglobe.com offers reactions of carboxylic acids homework help, reactions of carboxylic acids assignment help, online tutoring assistance, organic chemistry solutions by online qualified tutor's help.
phase rule tutorial all along with the key concepts of degree of freedom or variance, phase diagram, phase diagram of water, merits of phases rule and limitation of phase rule
Theory and lecture notes of Sets and Data management all along with the key concepts of sets, Data management, Sequential set, Partitioned set, Parent-child set. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Sets and Data management.
Theory of Dynamic Programming comprising the key concept of Matrix Chain Multiplication, Matrix Chain Multiplication Problem, Longest Common Subsequence, Edit Distance, Zero-One Knapsack and Counting Change.
Financial Econometrics Assignment Help is a better option to grab higher academic grades with 24x7 support of professional tutors.
tutorsglobe.com public debt assignment help-homework help by online subject matter of public finance tutors
TutorsGlobe.com Chemistry of Alkanes Assignment Help-Homework Help by Online Access Chemistry Tutors
tutorsglobe.com chemical agents assignment help-homework help by online control of microorganisms tutors
tutorsglobe.com thalamus assignment help-homework help by online position of flower tutors
www.tutorsglobe.com - free tutorials on structured analysis development method, design dfd data flow diagrams in theory of system analysis methods in programming languages, get assignment help - homework help by tutors.
there are two kinds in video modulation - positive modulation (while the intensity of picture brightness results increase in amplitude of the modulated envelope, it is termed as positive modulation.), negative modulation
tutorsglobe.com quality choice assignment help-homework help by online imperfect information tutors
tutorsglobe.com reabsorption in proximal convoluted tubule assignment help-homework help by online mechanism of urine formation tutors
1933622
Questions Asked
3689
Tutors
1449474
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!