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Package classes and associations into models
Programs are made of separate physical units which could be edited, imported, complied or otherwise manipulated. The careful partitioning of an implementation into package is significant for group work on the program. Packaging has the following issues:
a. Information hiding
b. Collection of entities
c. Constructing physical modules with strong coupling with each other module.
How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied. Ans
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
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Attributes and its types explain?
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