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Problem:
‘Users and Information system specialists need to spend inordinate amounts of time locating and gathering data' (Watson and Hal, 1998)
Recent developments in the area of Data Warehousing and its associated technologies claim to be able to improve information management in organisations.
Required:
(i) Describe the terms ‘Database' and ‘Data Warehouse'.
(ii) Show how the Data Warehousing approach to information management improves on the Data Base Management Systems (DBMS) approach.
Describe Physical Data independence ? Physical Data Independence - It is capacity to modify the internal schema without having to change conceptual schema. Therefore, the exter
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Define DBMS? DBMS: database management system (DBMS) is computer software designed for the reason of supervision databases based on a variety of data models.
Explain Interfaces for parametric Users? Interfaces for Parametric Users - Parametric users, such as bank tellers, frequent have a little set of operations in which they must p
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
The dataset " CFOLYMPICS.XLS " contains the observations used in the above article. The definitions of the variables are also included in this spreadsheet. However, for the purpo
What is a trigger
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
3NF Normal Form A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true X is a Super-key of R. A is a prime attribute of R
give some example real-life situations where DBMS are most suiitabe
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