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Question:
i) Explain the terms data warehousing and data mining.
ii) Discuss the importance of the following security principles that a digital firm should amongst others, normally implement: Authentication, Availability and Confidentiality.
iii) What is the importance of an Intranet in a Digital firm.
iv) How should an organisation acquire and manage the firm's hardware and software assets.
v) How can information systems help people working in a group make decisions more efficiently?
Problem 1 What is a Data Warehouse? Mention its advantages 2 Explain the Top-Down and Bottom-up Data Warehouse development Methodologies 3 What is Data Transformation? Ex
what is definition hierarchical data model
#what is cursor its uses ? Explain it
Sparse and Dense Indexes These indexes in principle are the similar as that of indexes used at the back of the book. The key facts of the indexes are: They are arranged
Before we talk about the relational model in more detail, let us first define some very basic terms used in this model. Tuple Every row in a table shows a record and is cal
real life situations where database management system are most suitable
Attributes and its types explain?
what is cascading rollback
Using SQL create a view RS for the relations R and S. The view consists of the columns A and D renamed as X and Y in that order. Insert a tuple into it. Show the contents of t
Complete replication: It implies maintaining of a whole copy of the database at every site. Thus, the reliability & availability and performance for query response are maximized.
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