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Task Part A. Create an ERD from a business problem. (50 marks) Read the following problem and complete the tasks listed below. THE ABS Blood Bank Australian Blood Services (ABS) i
explaination
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
Write short notes on transaction state? A transaction may not always complete its implementation successfully such a transaction is termed aborted A transaction must be in o
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
differences between a classified catalog and a dictionary catalog
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What does the cardinality ratio specify? Mapping cardinalities or cardinality ratios state the number of entities to which another entity can be associated. Mapping cardinaliti
What are the DBMS languages? Explain. Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc. b) Dat
Distributed Control and Data sharing: The geographical distribution of an organization can be showed in the distribution of the data; if a number of different sites are linked to e
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