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Describe Database state in details?
Database state: The actual data within the database at a particular moment in time is known as a database state.
What is magnetic disks?explain it? Magnetic disk provides the bulk of secondary storage of modern computer system. The disk capacity is growing at over 50% per year. But the st
er diagram on cosmetics.
Submission Requirements All answers must be computer generated (including text and diagrams). The hand-in version must include a header page (or with sufficient space)
For every n-ary relationship type R where n>2, we make a new table S to represent R. We contain as foreign key attributes in s the primary keys of the relations that show the parti
Describe the candidate key functions ? Candidate Key and Alternate Key: In some instances, an entity will have more than one attribute which can serve as a primary key. Any key
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
PART MARKING: We will only mark TWO of the four questions below but you must submit answers to all four. We will choose the questions we mark randomly and we will supply you with
Hi is anyone well versed in accounting information systems available now to help me work through an important assignment due tomorrow at noon?
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
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