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What is Cardinality Ratio?
Cardinality Ratios - The cardinality ratios for relationship kinds specifies the maximum number of relationship instances in which an entity can participate in. The possible cardinality ratios for relationship categories are one-to-one (1:1), one-to-many or many-to-one (1:M or M:1), and many-to-many (M:N).
What is the full form of DDL? DDL is stand for Data Definition Language.
Describe Specialsation and generalization? Specialisation /generalization: This is a top down and bottom up approach to the design of database. It displays the IS_A relation
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
milestone assignment
gyan gurukul is a software company that provides software related solution.
Illustrate how you can use QBE to perform logical AND and OR operation
Probelm: a) In the context of OODBMS, define the following terms with appropriate examples. (i) Object class. (ii) Abstract class. (iii) Aggregation. (iv)
what is RDBMS? how it works? good example.
er diagram on cosmetics.
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