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define anomalies and different types of anomalies with example
Question : (a) Explain with the help of appropriate examples the difference between ‘Data' and ‘Information'. (b) A digital image is an array of pixels, where each pixel h
To do the division operation R1 ÷ R2, R2 should be a correct subset of R1. In the following example R1 have attributes A and B and R2 have only attribute B so R2 is a correct subse
Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
Your friend owns a computer store in Yuen Long, selling Desktop and Notebook PCs and other computer peripherals. Having been rather successful with his business there, he decided t
Explain the components of Database System in details.
differences between a classified catalog and a dictionary catalog
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
what is meant semantic query optimization? how does it differ from other query optimization techniques?
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
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