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Security: In a centralised system, access to the data can be simply controlled. Though, in a distributed DBMS not only does access to replicated data have to be controlled in many locations, but also the network required to be secured. Networks over a period have become more secure, still there is a long way to go.
Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
Explain forms based and graphical interface? Forms based and graphical interface: graphical user interface (GUI) is a kind of user interface which permits people to interact
real life situations where database management system are most suitable
What is a Data Flow Diagram? Data Flow Diagram: A data flow diagram is the graph that shows flow of data values from their sources in objects in the course of processes whic
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
Having clause This clause is used for producing conditions on grouped information. Example: Find maximum salary and department number of those departments where maxim
Using Relational Algebra which query finds customers, who have a balance of over 1000 ? Using Relational Algebra Π Customer_name( σ balance >1000(Deposit)) is query to find cu
What are the Overlapping elements Overlapping elements can be found by scanning all the elements in front of deleted element in priority list for the sheet and comparing them
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
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