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Question:
a) What is Client/Server and what benefits can be expected from Client/Server systems?
b) Explain what middleware is and what it does. Why would MIS managers be particularly interested in such software?
c) What is a 3-Tier architecture, and what are the benefits of setting up one. Support your answer with appropriate diagram.
d) Discuss the different levels of security that should be established in a client/server database system.
Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): Ans: The relational database schema f
This constraint shows that the key attribute value in each tuple must be unique, i.e., no two tuples have the similar value for the key attribute. This is because the value of the
Why is database design important?
What is the State Machine Engine The straightest approach to implement control is to have any way of explicitly representing and executing state machines. With the help of thi
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
What is Data Storage? The storage structures and access methods used by database system are specified by a set of explanation in a special type of DDL called data storage-defin
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
Unrepeatable reads : Assume T7 reads X twice during its implementation. If it did not update X itself it could be very disturbing to see a dissimilar value of X in its next read. B
What are the failures of Controlling Events Between Objects Failure Unintentional termination of system. Several possible causes: failure of system hardware, o
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