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Explain the benefit of OOM. Main benefits of object oriented modeling are development of system become fast, quality of the system get improve. It gives freedom of use of alrea
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
Spanned and unspanned organisation? Spanned and unspanned organization: If records are not permited to cross block boundaries then the organisation is called unspanned record
State the Steps of Object Design Object design is a very iterative process in which various classes, relationships among objects are added when you move from one level to
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
Write a query that display ename annual salary and comm from emp table
Explain the two types of participation constraint. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
We have a buildup of payments that need to be processed. You will need:- To prepare customer account on our site Process payment (you must have working Paypal account to d
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