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Question:
(a) One of the steps in the five-step problem-solving model is implementation. Implementation is considered a key step in the problem-solving model. A problem may be identified and the best solution designed, but if the solution is not implemented properly, the solution may fail.
(i) Identify and briefly describe the major steps in the implementation process.
(ii) Explain how the risks inherent in a large MIS development project could be minimised.
(b) Enterprise's information systems must protect data and information from misuse, ensure availability to authorized users and display confidence in its accuracy. Describe, with examples, the THREE main objectives of information security.
Why older data models are being replaced by new data modelling 100 words accepted#
Question: (a) Can a set of data requirements be correctly modelled by two or more different ER diagrams? Explain your answer. You may use a small example, if you think it will
What is the purpose of storage manager? The storage manager is responsible for the following a) Interaction with the file manager b) Translation of DML commands in to low
What is a transaction ? The Transaction is a unit of data processing. For instance, many of the transactions at a bank may be withdrawal or deposit of money; transfer of money f
each publisher has uniqe name a mial addrs are also kept on each pubisher.a publisher publish one book.a book publish y one publisher.book identified by isbn.each book writn by one
Q. With the help of a suitable diagram gives module wise explanation of system architecture of DBMS. Sol. A Database management is a collection of interrelated data and col
brief history,definition,current trends and future trends if any of data fragmentation
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
Explain Instance and schemas? Instances and schemas: Databases changes over time as the information is deleted and inserted. The collection of information stored in database
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